service manualmitsubishitech.co.uk/data/mr-slim_outdoor/puhz-(z)rp/...rant piping is clean and it...

SERVICE MANUAL

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

CONTENTS

1. TECHNICAL CHANGES······································22. REFERENCE MANUAL·······································23. SAFETY PRECAUTION·······································34. FEATURES···························································75. SPECIFICATIONS················································86. DATA ····································································97. OUTLINES AND DIMENSIONS·························128. WIRING DIAGRAM ············································139. WIRING SPECIFICATIONS ·······························14

10. SPECIFICATIONS FOR ELECTRICAL WORK ·····1511. REFRIGERANT SYSTEM DIAGRAM ···················1912. TROUBLESHOOTING········································2113. FUNCTION SETTING·········································7014. EASY MAINTENANCE FUNCTION ···················7615. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···7916. DISASSEMBLY PROCEDURE ··························8917. PARTS LIST ·······················································9718. RoHS PARTS LIST ··········································103

No.OC338REVISED EDITION-B

R410AOutdoor unit[model names]

PUHZ-RP200YHA

PUHZ-RP250YHA

[Service Ref.]

PUHZ-RP200YHAPUHZ-RP200YHA1


Model name indication



July 2006

Revision:· RoHS PARTS LIST is added.· Some descriptions have been

modified.

· Please void OC338 REVISEDEDITION-A.

NOTE:• This manual describes only

service data of the outdoorunits.

• RoHS compliant productshave <G> mark on thespec name plate.

• For servicing of RoHS compliant products, refer tothe RoHS Parts List.

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2

2 REFERENCE MANUAL

Model name Service Ref.

PLA-RP35/50/60/71AA PLA-RP35/50/60/71AA.UK OC335

PLA-RP100/125/140AA2 PLA-RP100/125/140AA2.UK OC357

PCA-RP50/60/71/100/125/140GA OC328PCA-RP50GA2

PCA-RP50/60/71/100/125/140GAPCA-RP50GA2

PCA-RP71/125HA PCA-RP71/125HA OC329

PKA-RP35/50GAL PKA-RP35/50GAL OC330

PKA-RP60/71/100FALPKA-RP50FAL2

PKA-RP60/71/100FALPKA-RP50FAL2

OC331

PEAD-RP35/50/60/71EA(2) PEAD-RP35/50/60/71EA(2).UK -PEAD-RP100/125/140EA(2) PEAD-RP100/125/140EA(2).UK

PEAD-RP60/71/100GA PEAD-RP60/71/100GA.UK

PEH-RP200/250MYA PEH-RP200/250MYA

-

-

2-2.TECHNICAL DATA BOOK

Manual No. OCS01

Service Manual No.

2-1. INDOOR UNIT’S SERVICE MANUAL

1 TECHNICAL CHANGES

PUHZ-RP200YHAPUHZ-RP250YHA PUHZ-RP250YHA1

PUHZ-RP200YHA1

The parts below have been changed.• 4-WAY VALVE AND COIL(21S4)• BYPASS VALVE AND COIL(SV)

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3

3 SAFETY PRECAUTION

Cautions for units utilizing refrigerant R410A

3-1. CAUTIONS RELATED TO NEW REFRIGERANT

Use new refrigerant pipes.

Make sure that the inside and outside of refrige-rant piping is clean and it has no contaminationsuch as sulfur hazardous for use, oxides, dirt, shaving particles, etc.In addition, use pipes with specified thickness.

Store the piping to be used during installationindoors and keep both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)

Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.

In case of using the existing pipes for R22, be careful withthe followings.· Change flare nut to the one provided with this product. Use a newly flared pipe. · Avoid using thin pipes.

Charge refrigerant from liquid phase of gascylinder.

If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrige-rant can cause deterioration of refrigerant oil etc.

Use a vacuum pump with a reverse flow check valve.Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Keep the tools with care.

If dirt, dust or moisture enter into refrigerant cycle, that cancause deterioration of refrigerant oil or malfunction of com-pressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigera-nt will change and the efficiency will be lowered.

Flare tool

Electronic refrigerant charging scale

Vacuum pump adaptorSize adjustment gauge

Gauge manifold

Torque wrenchGas leak detectorCharge hose

Tools for R410AContamination inside refrigerant piping can cause deterio-ration of refrigerant oil etc.

If dirt, dust or moisture enter into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of com-pressor.

If large amount of mineral oil enter, that can cause deterio-ration of refrigerant oil etc.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact witha flame, poisonous gases will be released.

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4

Gravimeter

Unit

[3] Service toolsUse the below service tools as exclusive tools for R410A refrigerant.

No. Specifications

1 Gauge manifold ·Only for R410A

·Use the existing fitting specifications. (UNF1/2)

·Use high-tension side pressure of 5.3MPa·G or over.

2 Charge hose ·Only for R410A

·Use pressure performance of 5.09MPa·G or over.

3 Electronic scale

4 Gas leak detector ·Use the detector for R134a, R407C or R410A.

5 Adaptor for reverse flow check ·Attach on vacuum pump.

6 Refrigerant charge base

7 Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)

Cylinder with syphon

8 Refrigerant recovery equipment

[1] Cautions for service(1) Perform service after collecting the refrigerant left in unit completely.(2) Do not release refrigerant in the air.(3) After completing service, charge the cycle with specified amount of refrigerant.(4) When performing service, install a filter drier simultaneously.

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant chargeWhen charging directly from cylinder· Check that cylinder for R410A on the market is syphon type.· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

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5

3-2. CHANGED POINT• Precautions when reusing existing R22 refrigerant pipes (1) Flowchart

Connecting a new air conditioner to existing R22 refrigerant pipes1 Flare the pipe for the use with R410A refrigerant.

Use the flare nut attached to indoor and outdoor unit of the new air conditioner only.2 When reusing existing R22 refrigerant pipes of which gas pipe is [28.58mm and, in addition, when the outdoor unit is

installed to lower position than the indoor unit, be sure to change the setting of the DIP SW8-1 on the controller circuit board of the outdoor unit to ON.✽ This is to increase the speed of refrigerant passing in the gas pipe so that refrigerant oil can smoothly flow in the system.• Use a different-diameter joint or brazing for the connection.

3 When reusing standard-size existing R22 refrigerant pipes.The pipes can be reused with pipe length restriction described on TECHNICAL DATA BOOK (OCS01).

Measure the existing pipe thickness and checkfor damage.

The existing pipe thickness meets specifi-cations and the pipes are not damaged.

The existing pipe thickness does not meetspecifications or the pipes are damaged.

Check if the existing air conditioner can operate.

The existing air conditioner can operate. The existing air conditioner cannot operate.

After operating the cooling system for about30 minutes, do a pump down work.

Use a refrigerant collecting device to collect the refrigerant.

Check the oil condition when collecting the refrigerant.

Oil is clean. (Clear to brownish color) Oil is dirty. (Black color)When the compressor bearings areglazed, rotation scratches are present,or the compressor breaks down, ironparticles or oil deterioration will blackenthe oil.

Disconnect the existing air conditioner fromthe pipes.

The existing piping can be reused.After flaring the pipes again, connect thenew air conditioner.

The existing pipes cannot be reused.Use new pipes.

Perform the following inspections: airtightness test, vacuum dryness (additionalrefrigerant charge), gas leakage check

Replacement operation

Test operation

Replacement operation is the operation by which impurities remaining inthe existing piping (chlorinated compounds) are captured by the activatedcarbon filter (replacement filter) in the outdoor unit.• This model will automatically begin the replacement operation after it has been

installed when it enters the initialization phase for normal heating or cooling. How-ever, the unit will not automatically perform the replacement operation if it is movedto a new location where it will be used with existing R22 refrigerant piping. Undersuch conditions, always use the SW8-2 operations to perform the replacementoperation before beginning the test operation.

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6

(2) Cautions for refrigerant piping workNew refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.

1Thickness of pipesBecause the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness shown below. (Never use pipes of 0.7mm or below.)

2Dimensions of flare cutting and flare nutThe component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that, R410A is a refrigerant, which has higher risk of leakage because of its working pressure higher than that of other refriger-ants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A have been speci-fied separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also have partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2” and 5/8”, the dimension B changes. Use torque wrench corresponding to each dimension.

3Tools for R410A (The following table shows whether conventional tools can be used or not.)

1/4”3/8”1/2”5/8”3/4”7/8”1”

1”-1/8”

6.359.5212.7015.8819.0522.2025.4028.58

0.80.80.81.0————

0.80.80.81.01.01.01.01.0

Nominaldimensions

Diagram below: Piping diameter and thickness

Outsidediameter (mm)

Thickness (mm)R410A R22

1/4”3/8”1/2”5/8”3/4”

6.359.5212.7015.8819.05

9.113.216.619.7—

9.013.016.219.423.3

Nominaldimensions

Flare cutting dimensionsOutsidediameter

Dimension A ( )+0-0.4

(mm)

R410A R221/4”3/8”1/2”5/8”3/4”

6.359.5212.7015.8819.05

17.022.026.029.0—

17.022.024.027.036.0

Nominaldimensions

Flare nut dimensionsOutsidediameter

Dimension B(mm)

R410A

w

w36.0mm for indoor unit of RP100, 125 and 140

R22

Gauge manifoldCharge hoseGas leak detectorRefrigerant recovery equipmentRefrigerant cylinderApplied oil

Safety charger

Charge valve

Vacuum pump

Flare tool

BenderPipe cutterWelder and nitrogen gas cylinderRefrigerant charging scaleVacuum gauge or thermis-tor vacuum gauge and vacuum valveCharging cylinder

Air purge and refrigerant chargeOperation check and the two aboveGas leak checkCollection of refrigerantRefrigerant chargeApply to flared section

Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerantPrevent gas from blowing out when detaching charge hoseVacuum drying and airpurge

Flaring work of piping

Bend the pipesCut the pipesWeld the pipesCharge refrigerantCheck the degree of vacuum. (Vacuum valve prevents back flow of oil and refri-gerant to thermistor vacuum gauge)Charge refrigerant

Tool exclusive for R410ATool exclusive for R410ATool for HFC refrigerantTool exclusive for R410ATool exclusive for R410AEster oil and alkylbenzeneoil (minimum amount)Tool exclusive for R410A

Tool exclusive for R410A

Tools for other refrigerants can be used if equipped with adop-ter for reverse flow checkTools for other refrigerants can be used by adjusting flaring dimensionTools for other refrigerants can be usedTools for other refrigerants can be usedTools for other refrigerants can be usedTools for other refrigerants can be usedTools for other refrigerants can be used

Tool exclusive for R410A

Tools and materials Use R410A tools Can R22 tools be used?

(Usable if equipped with adopter for reverse flow) (Usable by adjusting flaring dimension)

Can R407C tools be used?

Ester oil: Alkylbenzene oil: minimum amount

(Usable if equipped with adopter for reverse flow) (Usable by adjusting flaring dimension)

: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.) : Tools for other refrigerants can be used under certain conditions.: Tools for other refrigerants can be used.

Dimension A

Dimension B

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7

4 FEATURES

CHARGELESS SYSTEMPRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max.30m)

The refrigerant circuit with LEV(Linear Expansion Valve) and accumulator always control the optimal refrigerantlevel regardless of the length (30m max. and 5m min.) of piping. The additional refrigerant charging work duringinstallation often causes problems. Heretofore it is completely eliminated. This unique system improves the qualityand reliability of the work done.It also helps to speed up the installation time.



Indoor unit

Outdoor unit

PUHZ-RP·YHA

200 250

PEH-RP·MYA

Indoor unit

Outdoor unit

PUHZ-RP·YHA

200 250

PLA-RP100AA2 ✕ 2

PLA-RP125AA2✕ 2

PEAD-RP100EA2✕ 2

PEAD-RP125EA ✕ 2

PEAD-RP100GA ✕ 2

PKA-RP100FAL ✕ 2

PCA-RP100GA ✕ 2

PCA-RP125GA ✕ 2

Indoor unit

Outdoor unit

PUHZ-RP·YHA200 250

PLA-RP60AA ✕ 3

PLA-RP71AA ✕ 3

PEAD-RP60EA ✕ 3

PEAD-RP71EA ✕ 3

PEAD-RP60GA ✕ 3

PEAD-RP71GA ✕ 3

PKA-RP60FAL ✕ 3

PKA-RP71FAL ✕ 3

PCA-RP60GA ✕ 3

PCA-RP71GA ✕ 3

Indoor unit

Outdoor unit

PUHZ-RP·YHA

200 250

PLA-RP50AA ✕ 4

PLA-RP60AA ✕ 4

PEAD-RP50EA ✕ 4

PEAD-RP60EA ✕ 4

PEAD-RP60GA ✕ 4

PKA-RP50GAL ✕ 4

PKA-RP50FAL2 ✕ 4

PKA-RP60FAL ✕ 4

PCA-RP50GA(2) ✕ 4

PCA-RP60GA ✕ 4

Ratio of distributing Part No.

Synchronized twin 50:50 MSDD-50WR-E

Synchronized triple 33:33:33 MSDT-111R-E

Synchronized quadruple 25:25:25:25 MSDF-1111R-E

PCA-RP125HA ✕ 2

PCA-RP71HA ✕ 3

4-1 COMBINATION OF INDOOR AND OUT DOOR UNITS4-1-1 1:1 SYSTEM

4-1-2 SYNCHRONIZED TWIN, TRIPLE AND QUADRUPLE SYSTEM(1) Synchronized twin (50:50) (2) Synchronized triple (33:33:33) (3) Synchronized quadruple (25:25:25:25)

4-1-3 MULTI DISTRIBUTION PIPE (OPTION)

4-2 FEATURES

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8

5 SPECIFICATIONS

3-ph, 50Hz, 400V (4wires)

Munsell 3Y 7.8/1.1Linear Expansion Valve

HermeticANV47FFBMT

Line start HP switch, LP switch, Discharge thermo

—Plate fin coil

Propeller fan o 10.635

150(5,300)Reverse cycle

900(35-7/16)750(29-17/32)

1,798(70-25/32)198(436)R410A

10.5(23.1)

2.30(MEL56)

FlaredFlared & Brazing

Max. 40mMax. 120m

Btu/hkW

AA

kW

W

kWK/min(CFM)

dBdB

mm(in.)mm(in.)mm(in.)kg(lbs)

kg(lbs)

Lmm(in.)mm(in.)

Power supply (phase, cycle, voltage)Running currentMax. current

External finishRefrigerant controlCompressor

ModelMotor outputStarter typeProtection devices

Crankcase heaterHeat exchangerFan Fan(drive) o No.

Fan motor outputAirflow

Defrost methodNoise level

Dimensions

WeightRefrigerant

Charge

Oil (Model)Pipe size O.D.

Connection method

Between the indoor & outdoor unit

Mode

CoolingHeating

WDH

LiquidGas

Indoor sideOutdoor sideHeight differencePiping length

Service Ref.

Cooling64,800

19.0(10.0~22.4)

10.024

4.5

5556

9.52(3/8)25.4(1)

Heating76,400

22.4(10.0~25.0)

10.4

Cooling75,000

22.0(12.5~28.0)

11.524

5.5

5858

12.7(1/2)28.58(1-1/8)

Heating92,100

27.0(15.7~31.5)

12.4

OU

TD

OO

R U

NIT

REFR

IGER

ANT P

IPIN

G



Capacity

OC338B-1.qxp 06.7.11 10:49 AM

9

6 DATA

Parts name

Outdoor unit

250V 6.3A

ANV47FFBMT

HAM-BD32(0~480 Pulse)

2.7mH 25A

DC12V

0:/15t, 10:/9.6t, 20:/6.3t, 25:/5.4t, 30:/4.3t, 40:/3.0t

0:/15t, 10:/9.6t, 20:/6.3t, 25:/5.4t, 30:/4.3t, 40:/3.0t

0:/15t, 10:/9.6t, 20:/6.3t, 25:/5.4t, 30:/4.3t, 40:/3.0t

20:/250t, 30:/160t, 40:/104t, 50:/70t, 60:/48t, 70:/34t, 80:/24t, 90:/15t, 100:/13t

6P 635W o1PA6Y635-T

5P(L1, L2, L3, N, )

OFF 3.60+0.2MPa ON 2.80i0.15MPa

OFF -0.03i0.03MPa ON 0.05i0.04MPa

VT60100

LB64 AC220~240V(DM50G461)

PUHZ-RP200YHAPUHZ-RP250YHA

FUSE(F 3,4)

250V 15AFUSE(FUSE1,2)

Solenoid Valve Coil(Four-way Valve)

21S4Linear Expansion

Valve(LEV-A)

Reactor(DCL)

Motor Compressor(MC)

High Pressure Switch(63H)

Low Pressure Switch(63L)

Fan Motor(MF)

Thermistor(Discharge)

(TH4)

Thermistor(Outdoor)

(TH7) Terminal Block(Power Supply)

(TB1)

3P(S1, S2, S3)

Terminal Block(Indoor / Outdoor)

(TB2)

2200= 400V

16" 30W

Main Smoothing Capacitor(CB1, CB2)

Rush Current Protect Resister

(RS)

Thermistor(Outdoor Pipe)(TH3, TH32 )

Thermistor(Outdoor2-PhasePipe)

(TH6)

Linear Expansion Valve Coil(LEV-A)

Solenoid Valve(Four-way Valve)

VF20100Solenoid Valve

<Bypass Valve>

LD2 AC220~240VSolenoid Valve Coil

<Bypass Valve>(SV)

PUHZ-RP200YHA1

PUHZ-RP250YHA1

STF0731Z

FDF6A-008-RK

STF AC220~240V(BG50T388)

AC220~240V

6-1. ELECTRICAL PARTS SPECIFICATIONS

OC338B-1.qxp 06.7.11 10:49 AM

10

6-2. COMPRESSOR TECHNICAL DATA

U-V

U-W

W-V

Unit

Compressor model

WindingResistance

( " )

ANV47FFBMT

(at 20°C)

0.72

0.72

0.72

PUHZ-RP200, 250YHAPUHZ-RP200, 250YHA1

1m

1m

MICROPHONEUNIT

GROUND

6-3. NOISE CRITERION CURVES

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISE

OC

TAV

E B

AN

D S

OU

ND

PR

ES

SU

RE

LE

VE

L, d

B (

0 d

B =

0.0

002

µbar

)

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70


COOLINGMODE

HEATING55.0

SPL(dB)

56.0

LINE

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISE

OC

TAV

E B

AN

D S

OU

ND

PR

ES

SU

RE

LE

VE

L, d

B (

0 d

B =

0.0

002

µbar

)

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70


COOLINGMODE

HEATING58.0

SPL(dB)

58.0

LINE

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11

6-4. STANDARD OPERATION DATA

The unit of pressure has been charged to MPa based on international SI system. The converesion factor is : 1(MPa)=10.2(kgf/cm2)

PEH-RP250MYAPEH-RP200MYA

PEH-RP250MYAPEH-RP200MYAIndoor unit

3, 503, 50

400400

0.940.65

1.641.12PUHZ-RP250YHAPUHZ-RP250YHA1


3, 503, 50

400400

V

kW

A

V

HeatingCoolingHeatingCooling

Representative matching

Mode

11.9812.0110.1510.63

67.170.271.373.0

38.747.841.447.1

3.014.64.712.2

5555

20272027

15191519

37.015.338.814.7

735735

624624

D.B.

W.B.

D.B.

D.B.

W.B.

0.820.75

0.150.18

SHF

BF

2.27(23.2)

2.86(29.2)

2.59(26.4)

2.81(28.7)

0.63(6.4)

0.96(9.8)

0.69(7.0)

0.92(9.4)

Phase, Hz

Volts

Input

Current

Outdoor unit

Phase, Hz

Volts

Current

Discharge temreature

Condensing temreature

Suction temreature

Ref. pipe length

Intake air temreature

Discharge air temreature

Intake air temreature

Discharge pressure

Suction pressure

A

˚C

˚C

˚C

m

˚C

˚C

˚C

˚C

˚C

MPa(kgf/cm2)

MPa(kgf/cm2)

Out

door

side

Indo

orsi

deR

efrig

eran

t circ

uit

Ele

ctric

al c

ircui

t

--

--

6-5. ADJUSTING THE AMOUNT OF REFRIGERANT

Amount of additional refrigerant charge (kg)

30 m and less 31-40 m and less 41-50 m and less 51-60 m and less 61-70 m and less 71-120 m and less

0.9 kg 1.8 kg 2.7 kg 3.6 kg

1.2 kg 2.4 kg 3.6 kg 4.8 kg

Outdoor unit permittedpipe length

RP200

RP250120m or less

At time of shipping(kg)

10.5

10.5No additional

charge necessary

The additional chargeamount is obtained bythe following formula.

Main piping:Liquid line size[9.52 overall length [m]o 0.09 [kg/m]

Branch piping: Liquidline size[9.52 overall length [m]o 0.06 [kg/m]

Branch piping: Liquidline size[6.35 overall length [m]o 0.02 [kg/m]

3.6 (kg)

Amount of additionalcharge [kg]

Main piping:Liquid line size[12.7 over all length [m]o 0.12 [kg/m]

–=

Additional charge amountfor 70 m

RP200 3.6 kgRP250 4.8 kg

+ + +

Calculate the additional charge amount based on the following procedure.If the calculation results in an amount that is smaller than the "Additional charge amount for 70m," perform the additional charge using the amount shown in "Additional charge amount for 70m."

<Table 2>

OC338B-1.qxp 06.7.11 10:49 AM

12

7 OUTLINES AND DIMENSIONS

00

[7

O.D

[ 2

8.58

2

O.D

[ 2

5.4

[ 25

.4

2R

efrig

eran

t GA

S P

IPE

con

nect

ion

(BR

AZI

NG

)

[ 1

2.7

(1/2

F)

[ 9

.52

(3/8

F)

1

250Y

HA

200Y

HA

Ref

riger

ant L

IQU

ID P

IPE

con

nect

ion

(FLA

RE

)1

AIR

INTA

KE

AIR

FLO

W

218

375

65

460

Dra

in H

ole(

4-[

10)

Dra

in H

ole

80

Pip

ing

Hol

e (K

nock

-OU

T)

Indo

or/O

utdo

or W

iring

Powe

r sup

ply W

iring

(Ear

th w

iring)

Wiri

ng H

ole([ 4

0 Kn

ock-

OUT

)

Wiri

ng H

ole([ 2

7 Kn

ock-

OUT

)20

0

94

4248

(Rea

r Sid

e)

Serv

ice p

anel

Wiri

ng H

ole([ 2

7 Kn

ock-

OUT

)

Wiri

ng H

ole([ 4

0 Kn

ock-

OUT

)11

0

Pipi

ng H

ole([ 1

22 K

nock

-OUT

)

2

7015

0

1

Pipi

ng H

ole([ 1

22 K

nock

-OUT

)W

iring

Hol

e([ 4

0 Kn

ock-

OUT

)

200

435

0364

(780)

(22)

1228

60

180

65

140

70

120

317

80123105

6316

1

90

R15

R15

900

700~

796

560

750

736

900

750

1798

1519

1457

667

098

48 152

40 38191

19 58 21

380

6078

0

736

Wiri

ng H

ole([ 2

7 Kn

ock-

OUT

)

(Fro

nt S

ide)

Ser

vice

pan

el

GL

FOUN

DATI

ON B

OLTS

PIT

CH &

DRA

IN H

OLES

Fron

t sid

e

Wiri

ng H

ole([

40 K

nock

-OUT

)W

iring

Hol

e([

27 K

nock

-OUT

)

MIT

SU

BIS

HI

ELE

CT

RIC

PUHZ-RP200YHA PUHZ-RP200YHA1


Unit : mm

OC338B-1.qxp 06.7.11 10:49 AM

13

8 WIRING DIAGRAM

PUHZ-RP200YHA PUHZ-RP250YHA PUHZ-RP200YHA 1 PUHZ-RP250YHA1

TB1

MCMF21S4

63H63LTH3

TH4TH6TH7LEVDCL

Terminal Block (Power Supply)TB2 Terminal Block (Indoor/Outdoor)

Motor CompressorFan Motor Solenoid Valve (Four-Way Valve)

High Pressure SwitchSV Solenoid Valve (Bypass Valve)

Low Pressure SwitchThermistor (Outdoor Pipe)

TH32 Thermistor (Outdoor Pipe)Thermistor (Discharge)Thermistor (Outdoor 2-Phase Pipe)Thermistor (Outdoor)Linear Expansion ValveReactor

RS Rush Current Protect ResistorCB1,CB2 Main Smoothing Capacitor

Power Circuit BoardConnection Terminal (U/V/W-Phase)

P.B.TB-U/V/W

Connection TerminalTB-P1Connection TerminalTB-P2Connection TerminalTB-C1Connection TerminalTB-N1Current TransCT1,CT2ConnectorCN1ConnectorCN2ConnectorCN4ConnectorCN5

Connection Terminal (Ll /L2/L3-Power Supply)TB-L1/L2/L3

Noise Filter Circuit BoardN.F.

F.C.

Connection Terminal (L1/L2/L3/N-Power Supply)

Connector

LI1/LI2/L13/NIConnection Terminal (L1/L2/L3/N-Power Supply)LO1/LO2/LO3/NO

CNAC1ConnectorCNAC2ConnectorCNCTConnectorFan Controller Circuit Board

CNDC

Controller Circuit BoardC.B.

SYMBOL NAME

ConnectorCN2ConnectorCN5ConnectorCN6LED (MF Operation Status Indicators)LED1

FUSE (6.3 A)Switch (Forced Defrost, Defect History Record Reset, Refrigerant Address)Switch (Test Operation)Switch (Function Switch)

Switch (Function Switch)

F3, F4SW1

SW4SW5SW6SW7

Switch (Function Switch, Model Select)SW8Switch (Function Switch)SW9Switch (Model Select)SW10

Switch (Model Select)

CNS ConnectorCNAC Connector

CNDC Connector21S4 ConnectorSV2 Connector

CN331CN4

CN332LEV-A63H

ConnectorConnector

ConnectorConnectorConnector

63L Connector

CN2SS

ConnectorConnector (Connection for Option)

Connection Terminal (U/V/W-Phase)U/V/W

FUSE (15 A)FUSE1,FUSE2

Switch (Pump Down)Connector (Emergency Operation)

SWPCN31

Terminal Block(M-NET connection)Connector (Transmission)Connector (Power Supply)

LED (Power Supply:DC5V)

LED (Power Supply:DC12V)

LED (Connection to Outdoor Unit)LED (Transmission:Sending)LED (Transmission:Receiving)

Connector (M-NET communication)

SYMBOL NAME

Switch (Address setting:2nd digit)

Switch (Status of communication)Switch (Address setting:1st digit)

TB7CN5CNDCN2MSW1SW11SW12LED1LED2LED3LED4LED5

M-NET ADAPTER

ConnectorConnectorConnectorConnector

CNM

CNMNTCN3S

CNVMNT

CNDM

Connector (A-Control Service Inspection Kit)Connector (Connect to Optional M-NET Adapter Board)Connector (Connect to Optional M-NET Adapter Board)

CN51 Connector ( Connection for Option)LED1,LED2 LED (Operation Inspection Indicators)

Connector ( Connection for Option)Connector ( Connection for Option)

TH3TH4TH7/6TH32

LED

1

+

--

--

+

W

V MC

U

11

21

23

5

W

V

U

CN

6(B

LU)

CN

2(G

RN

)C

N5

(WH

T)

1 2 31 2 3

MF

F.C.

21S4 SV

21S4(GRN)

SS(WHT)

SV2(BLU)

F3

F41 23 43 2 1

FUS

E1

FUS

E2

1 2 3 4 5 6 7

P.B.

1 2 3 4 5 6 7

12

12

CN

5(R

ED

)C

N4

(WH

T)

1 3 5

DCL CB1

RS

CB2

CT1

CT2

N.F.

12

13

13

13

TB1L1

L2

L3

N

TB2

S1

S2

S3

LO 1

LO 2

LO 3

GD2GD1

CN

AC

1(W

HT)

CN

CT

(RE

D)

CN

AC

2(R

ED

)

CN

DC

(PN

K)

POWER SUPPLY3N~400V 50Hz

NO FUSEBREAKER

INDOORUNIT

3 1

TB-P2

CNAC(WHT)

CN2(WHT)

12V5V

GND

GN

D5V

GN

D2

18V

CNDC(PNK)

CNS(WHT)

TB-C1TB-N1

TB-L1

TB-L2

TB-L3

TB-U

TB-V

TB-W

CN1(WHT)

CN2(WHT)

TB-P1

63H

(YLW

)3

1

1 2

CN332(BLU)

2 1

CN4(WHT)

CN

51(W

HT)

CN

DM

(WH

T)C

N3S

(WH

T)1

23

45

12

31

23

1 2 3 4 5 6 7 8 9 1011121314CNM

CN32

1

1

1

CN31

CNMNTCNVMNT

1 2

TH3(WHT)

TH7/6(RED)

TH32(BLK)

TH4(WHT)

LEV-A(WHT)

TH3TH6TH7TH32 TH4 LEV

1 21 21 2 1 2 3 4CN3N1 2 3

63L(RED)

63H 63L

CN331(GRN)

LED

1

LED

2

C.B.

SW4

SW1

SW6

SW7

SW9

SW10SW

PSW

8SW

5 ON

OFF

ON

OFF

ON

OFF

OFFON

LED2

LED3

LED4

LED

1

LED

5

SW1

SW11

A B S TB7

M-NET

CND(WHT)

CN

2M(W

HT)

CN

5(W

HT)

12

12

34

5

1 2 3

SW12

M-NET ADAPTER(OPTION)

+

+ +

1 2 3

1 2 3 4 5 6 1 2 31 2 3 4 5

3 1 3 1 3 1

LI 1

LI 2

LI 3

NI

(WHT) (WHT)(RED)

1 2 3 4 5 6OFFRP200YON

1 2OFFON

1 2OFFON

1 2 3 4 5 6OFFRP250YON

MODEL1 MODEL SELECT

SW6 SW10

1 2OFFON

1 2

3

3OFFON

SW8

OC338B-1.qxp 06.7.11 10:49 AM

14

9 WIRING SPECIFICATIONS

✽1 : In case that cable with stripe of yellow and green is available.✽2 : In the flat cables are connected as this picture, they can be used up to 30m.

✽3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5mm2. ✽4 : In case of regular polarity connection (S1-S2-S3).✽5 : Mentioned cable length is just a reference value. It may be different depending on the condition of installation, humidity or materials, etc.

The cable length may vary depending on the condition of installation, humidity or materials, etc.

When cable length is 30m or more.

Use one cable for S1 and S2 and another for S3 as shown in the picture.

The cable shall not be lighter than design 245 IEC or 227 IEC.

Cross section

of cable

Round

2.5

2.5

1.5

2.5

3

3

4

4

(30)

✽1

(18)

✽3

30

✽4

Not

applicable

✽2

Flat

Flat

Round

Wire size

(mm2)Number

of wires

Clockwise : S1-S2-S3

Clockwise : S1-S2-S3-Open

Connect S1 and S3 to the opposite angle

Not applicable

(Because center wire has no cover finish)

From left to right : S1-Open-S2-S3

Polarity L(m) ✽5

(3C Flat cable ✕ 2)

S1 S2 S3

Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point.(If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)

If the wiring connecting the indoor and outdoor units is longer than 80m, use separate indoor / outdoor unit powersupplies. (Refer to 10-2.)

S1

S2

S3

wire size :

cable length 50m : 4mm2

cable length 80m : 6mm2

WIRING SPECIFICATIONS FOR 220V-240V 50Hz(INDOOR - OUTDOOR CONNECTING CABLE)

OC338B-1.qxp 06.7.11 10:49 AM

15

SPECIFICATIONS FOR ELECTRICAL WORK10

10-1. FIELD ELECTRICAL WIRING (POWER WIRING SPECIFICATIONS) Indoor unit model

PhaseOutdoor unit

Frequency & VoltagePower supply

Max. Permissive System Impedance (" )Outdoor unit input capacity *1Main switch (Breaker)

Outdoor unit power supplyOutdoor unit power supply earthIndoor unit-Outdoor unit *2Indoor unit-Outdoor unit earthRemote controller-Indoor unit *3Outdoor unit L1-N, L2-N, L3-NIndoor unit-Outdoor unit S1-S2 *4Indoor unit-Outdoor unit S2-S3 *4Remote controller-Indoor unit *4

Wiri

ngW

ire N

o. O

size

(m

m2 )

Circ

uit

ratin

g

RP200, 2503N~(3ph 4-wires), 50Hz,

380-400-415V0.25

32A

4 o Min. 61 o Min. 6

Cable length 50 m : 3 o 4 (Polar) / Cable length 80 m : 3 o 6 (Polar)1 o Min. 2.5

2 o 0.69 (Non-polar)AC 220-230-240VAC 220-230-240V

DC24VDC12V

*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV).*2. Max. 80 m Total Ma including all indoor/ indoor connection is 80 m.

· Use one cable for S1 and S2 and another for S3 as shown in the picture.*3. A 10 m wire is attached in the remote controller accessory.*4. The voltage are NOT against the ground.

S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulated by the transformer or other device.

Notes: 1. Wiring size must comply with the applicable local and national code.2. Power supply cords and Indoor unit/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 245 IEC 57)3. Use an earth wire which is longer than the other cords so that it will not become disconnected when tension is applied. The earth wire should also be thicker than the power supply cord so that it can stand any surge of electricity when trouble occurs.

380/400/415V 50HzThree phase (4 wires)

Isolator (Switch)

A-ControlOutdoorUnit

A-ControlIndoorUnit

3 poles isolator (Switch)

S1

S2

S3

S1

S2

S3

. Warning:In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation betweenpower line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.

S1

S2

S3

12

S1S2S3

S1S2S3

Indoor/outdoor unit connection cable

Indoor unit

Unitpowersupply

Outdoor unit

Remote controller

L3

L2

L1

B

N

B Earth leakage breakerC wiring circuit breaker or isolating switch

C B


C 12

12

S1

Indoor unit

S2S3

S1S2S3

S1S2S3

Unitpowersupply Indoor/outdoor

unit connection cable

Indoor unit

Outdoor unit

Remote controller

Outdoor unit

L3

L2

L1

N


12

12

12

S1S2S3

S1S2S3

S1S2S3

S1S2S3

Indoor/outdoorconnection cable

Indoor unit

Indoor unit

Indoor unit

Remote controller

Unitpowersupply

Outdoor unit

L3

L2

L1

B

NC

1:1 system Synchronized twin and triple system Electrical wiring• Synchronized twin

• Synchronized triple

OC338B-1.qxp 06.7.11 10:49 AM

16

The following connection patterns are available.The outdoor unit power supply patterns vary on models.

1:1 System

<For models without heater>* The optional indoor power supply terminal kit is required.

S1S2

L3

L2

L1

N

12

LN

S1S2S3S3

A CB

D

J

E

B C

F

G

H

12

LN

S1S2S3

12

LN

S1S2S3

12

LN

S1S2S3

12

LN

S1S2S3

E

J B C

F

G G

H

G G

* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

A Outdoor unit power supplyB Earth leakage breakerC Wiring circuit breaker or isolating switchD Outdoor unitE Indoor unit/outdoor unit connecting cordsF Remote controllerG Indoor unitH OptionJ

A

B

C

D

E

F

G

H

J

Indoor unit power supply

<For models without heater>* The optional indoor power supply terminal kits are required.

Simultaneous twin/triple/four system

If the indoor and outdoor units have separate power supplies, refer to the table at thebelow. If the optional indoor power supply terminal kit is used, change the indoor unit electrical box wiring refering to the figure in the right and the DIP switch settings of theoutdoor unit control board.

* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

Outdoor unit power supplyEarth leakage breakerWiring circuit breaker or isolating switchOutdoor unitIndoor unit/outdoor unit connecting cordsRemote controllerIndoor unitOptionIndoor unit power supply

ONOFF 1 2 (SW8)

3

Indoor power supply terminal kit (option)Indoor unit electrical box connector con-nection changeLabel affixed near each wiring diagramfor the indoor and outdoor unitsOutdoor unit DIP switch settings (whenusing separate indoor unit/outdoor unitpower supplies only)

Indoor unit specificationsRequired

Required

Required

*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV).*2. Max. 120 m*3.The 10 m wire is attached in the remote controller accessory. Max. 500 m*4.The figures are NOT always against the ground.

Notes: 1. Wiring size must comply with the applicable local and national code.2. Power supply cords and indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 245 IEC 57)3. Install an earth longer than other cables.

Indoor unit modelIndoor unit power supplyIndoor unit input capacity

*1Main switch (Breaker)

Indoor unit power supplyIndoor unit power supply earthIndoor unit-Outdoor unit *2Indoor unit-Outdoor unit earthRemote controller-Indoor unit *3Indoor unit L-N *4Indoor unit-Outdoor unit S1-S2 *4Indoor unit-Outdoor unit S2-S3 *4Remote controller-Indoor unit *4

RP35~140~/N (single), 50 Hz, 230 V

16 A

2 o Min. 1.51 o Min. 1.52 o Min. 0.3

–2 o 0.3 (Non-polar)

AC 230 V–

DC24 VDC12 V

Circu

itra

ting

Wirin

gW

ire N

o. o

siz

e(m

m2 )

Electric heater(For models withheater)

Connectors (connections when shippedfrom the factory are for indoor unit powersupplied from outdoor unit)

Indoor unit power supplied from outdoor unit(when shipped from factory)

If the indoor andoutdoor units haveseparate powersupplies, change theconnections of theconnectors as shownin the followingfigure.

Connectors

Indoor unitcontrol board

Separate indoor unit/outdoor unit powersupplies

Electric heater(For models withheater)

S1

S2

S3

L

N

BLU

E

BLU

E

YELLOW

YELLOW

CN

D

CNDORANGE

CNDORANGE

S1

S2

S3

L

N

YELLOW

BLU

E

BLU

E

YELLOW

CN

D

Indoor unitcontrol board

* There are three types of labels (labels A, B, and C). Affix the appropriate labels tothe units according to the wiring method.

S1S2

L3

L2

L1

N

S3

A CB

D

10-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES

OC338B-1.qxp 06.7.11 10:49 AM

17

10-3. M-NET WIRING METHOD(Points to notice)(1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from

making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the sameconduit tube.

(2) Terminal block (TB7) for transmission wires should never be connected to 220~240V power supply. If it is connected, electronic parts on M-NET p.c. board may be burn out.

(3) Use 2-core x 1.25mm2

shield wire (CVVS, CPEVS) for the transmission wire. Transmission signals may not be sent orreceived normally if different types of transmission wires are put together in the same multi-conductor cable. Never do thisbecause this may cause a malfunction.

It would be ok if M-NET wire (non-polar, 2-cores) is arranged in addition to the wiring for A-control.

(4) Ground only one of any appliances through M-NET transmission wire (shield wire). Communication error may occur due tothe influence of electromagnetic noise.

“Ed” error will appear on the LED display of outdoor unit.“0403” error will appear on the central-control remote controller.

If there are more than two grounding spots on the shield wire, noise may enter into the shield wire because the groundwire and shield wire form one circuit and the electric potential difference occurs due to the impedance difference amonggrounding spots. In case of single spot grounding, noise does not enter into the shield wire because the ground wire andshield wire do not form one circuit.

To avoid communication errors caused by noise, make sure to observe the single spot grounding method described in theinstallation manual.

Groupremotecontroller

Refrigerantaddress 00M-NETaddress 01

A-controlremotecontroller




Refrigerantaddress 00M-NETaddress 03Power

supplyunit fortransmissionwire

Centralremotecontroller

M-NET transmission wire

✕ Bad example (Multi spot grounding of shield wire)

Good example 1 (Single spot grounding of shield wire)

Power supplyappliance

M-NET typeoutdoor unit















Good example 2 (Single spot grounding of shield wire)

OC338B-1.qxp 06.7.11 10:49 AM

18

10-3-3. Regulations in address settingsIn case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above section. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.

w Refrigerant addresses can be overlapped if they are in the different group.

w In group B, M-NET address of the outdoor unit whose refrigerant address is “00” is not set to the minimum in the group. As“3” is right for this situation, the setting is wrong. Taking group A as a good sample, set the minimum M-NET address inthe group for the outdoor unit whose refrigerant address is “00”.

10-3-1. M-NET address settingIn A-control models, M-NET address and refrigerant address should be set only for the outdoor unit. Similar to Free Combosystem, there is no need to set the address of outdoor unit and remote controller. To construct a central control system, thesetting of M-NET address should be conducted only upon the outdoor unit. The setting range should be 1 to 50 (the same asthat of the indoor unit in Free Combo system), and the address number should be consecutively set in a same group.

Address number can be set by using rotary switches (SW11 for ones digit and SW12 for tens digit), which is located on the M-NET p.c. board of outdoor unit. (Factory setting: all addresses are set to “0”.)

10-3-2. Refrigerant address settingIn case of multiple grouping system (multiple refrigerant circuits in one group), indoor units should be connected by remotecontroller wiring (TB5) and the refrigerant address needs to be set. Leave the refrigerant addresses to “00” if the group set-ting is not conducted. Set the refrigerant address by using DIP SW1-3 to -6 on the outdoor controller circuit board. [Factorysetting: all switches are OFF. (All refrigerant addresses are “00”.)]

1234567890

1234567890

1234567890

1234567890

12345678901234567890

1 2

~

50M-NET Address No.<Setting example>

Switngsetting

SW11onesdigit

SW12tensdigit

OFF

ON

1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 61 2 3 4 5 6

1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 61 2 3 4 5 6

0Refrigerant address

OFF

ON

8

OFF

ON

1

OFF

ON

9

OFF

ON

10

OFF

ON

11

OFF

ON

12

OFF

ON

13

OFF

ON

14

OFF

ON

OFFON

15

OFF

ON

2

OFF

ON

3

OFF

ON

4

OFF

ON

5

OFF

ON

6

OFF

ON

OFFON

7

Systemcontroller


Group A Group B Group C


TB5





Refrigerantaddress 00M-NETaddress 04Power

supplyunit fortransmissionwire



TB5

Group A Group B






Systemcontroller

Powersupplyunit fortransmissionwire

● M-NET wiring

(1) Use 2-core x 1.25mm2

shield wire for electric wires.(Excluding the case connecting to system controller.)

(2) Connect the wire to the M-NET terminal block.Connect one core of the transmission wire (non-polar) to A terminal and the other to B. Peel the shield wire, twist the shield part to a string and connect it to S terminal.

(3) In the system which several outdoor units are being connected, the terminal (A, B, S) on M-NET terminal block should be individually wired to the other outdoor unit’s terminal, i.e. A to A, B to B and S to S.In this case, choose one of those outdoor units and drive a screw to fix an ground wire on the plate as shown on the right figure.

Transmissionwire

Shield part

M-NET terminal block Ground

wire

A B S

OC338B-1.qxp 06.7.11 10:49 AM

19

11 REFRIGERANT SYSTEM DIAGRAM



Strainer#50

Strainer#50

Strainer#100

Strainer#100

Strainer#100

Strainer#100

Oilseparator

Strainer#100

Stop valve(with service port)

Stop valve(with service port)

Charge plug(Low pressure)

Accumulator

Oil-back holeStrainer#40

Linear expansion valve

Low pressure switch 63L

Compressor

Capillary tube1

Capillary tube2Replace

filter

High pressure switch 63H

Bypass valve

Charge plug(High pressure)

Thermistor TH4(Discharge)

Thermistor TH6(Outdoor 2-phase pipe)

Thermistor TH7(Outdoor)

Thermistor TH3(Outdoor pipe)

Thermistor TH32(Outdoor pipe)

Heat exchanger

4-way valve

Refrigerant GAS pipeconnection(RP200:1, RP250:1-1/8)

Refrigerant LIQUID pipe connection(RP200:3/8F, RP250:1/2F)

Refrigerant flow in coolingRefrigerant flow in heating

OC338B-1.qxp 06.7.11 10:49 AM

20

Refrigerant collecting (pump down)Perform the following procedures to collect the refrigerant when moving the indoorunit or the outdoor unit.1 Before collecting the refrigerant, first make sure that the all of the SW5 DIP switches

for function changes on the control board of the outdoor unit are set to OFF. If all of theSW5 switches are not set to OFF, record the settings and then set all of the switchesto OFF. Start collecting the refrigerant. After moving the unit to a new location andcompleting the test run, set the SW5 switches to the previously recorded settings.

2

3

Supply power (circuit breaker).* When power is supplied, make sure that “CENTRALLY CONTROLLED” is not

displayed on the remote controller. If “CENTRALLY CONTROLLED” is dis-played, the refrigerant collecting (pump down) cannot be completed normally.

After the liquid stop valve is closed, set the SWP switch on the control board of theoutdoor unit to ON. The compressor (outdoor unit) and ventilators (indoor andoutdoor units) start operating and refrigerant collecting operation begins. LED1and LED2 on the control board of the outdoor unit are lit.

* Set the SWP switch (push-button type) to ON in order to perform refrigerant collecting operation only when the unit is stopped.However, refrigerant collecting operation cannot be performed until compre-ssor stops even if the unit is stopped.Wait three minutes until compressor is completely stopped and set the SWPswitch to ON again.

4 As the unit automatically stops after two or three minutes of refrigerant collecting operation (LED1 if not lit and LED2 is lit), be sure to quickly close the gas stop valve.If the unit stops while both LED1 and LED2 are lit, open the liquid valve completely, wait three minutes, then repeat the step 3.

* If the refrigerant collecting operation has been completed normally (LED1 and LED2 are lit), the unit will remain stopped until the power supply is turned off.

5 Turn off the power supply (circuit breaker).* Note that when the length of the extension piping is long, it may not be

possible to perform a pump-down operation.When performing the pump-down operation, make sure that the low pressure is lowered to near0 MPa (gauge).

Unit replacement operation· This model will automatically begin the replacement operation after it has been

installed when it enters the initialization phase for normal heating or cooling. How-ever, the unit will not automatically perform the replacement operation if it is movedto a new location where it will be used with existing R22 refrigerant piping. Undersuch conditions, always use the SW8-2 operations to perform the replacementoperation before beginning the test operation.

Replacement operation procedures (When moving the unit and connecting itto existing R22 piping.)1 Supply power.2

3

Set DIP switch SW8-2 on the control board of the outdoor unit to ON to startreplacement operation.* The replacement operation is performed using the cooling system. Cool air will

flow from the indoor unit during the replacement operation.* During the replacement operation, TEST RUN is displayed on the remote controller

and LED1 and LED2 on the control board of the outdoor unit flash together.The duration of the replacement operation is determined by the length of the pip-ing. Always perform the replacement operation for longer than the stipulated time.* Always perform one of the following operations at the completion of the re-

placement operation. The replacement operation will end and the unit will auto-matically stop.

(1)Set SW8-2 from ON to OFF. (When ending a replacement operation of lessthan 2 hours.)· Each time SW8-2 is set from OFF to ON, the replacement operation can be

started. Always perform the replacement operation for longer than the stipu-lated time.Required replacement operation times

(2) The replacement operation will automatically stop after 2 hours. (It will end withSW8-2 still in the ON position.)· When the replacement operation has ended automatically after 2 hours of

operation, there is no need to set SW8-2 from ON to OFF; normal air con-ditioning operations can bestarted with the SW8-2 being set to ON.Howe-ver, to repeat the replacement operation, SW8-2 will have to be returned to OFF and then set to ON.

* If the indoor temperature is below 15:, the compressor will operate intermittently but the unit is not faulty.

Piping LengthReplacement

Operation Time0 to 20 meters 30 minutes or more21 to 30 meters 45 minutes or more31 to 70 meters 60 minutes or more

Some models can perform the replacement operation only by SW8-2 operation. Refer to the outdoor unit's Installation Manual for detail.

Start and finish of test run• Operation from the indoor unit

Execute the test run using the installation manual for the indoor unit.• Operation from the outdoor unit

By using the DIP switch SW4 on the control board of the outdoor unit, test run can be started and finished, and its operation mode (cooling/heating) can be set up.1Set the operation mode (cooling/heating) using SW4-2.2Turn on SW4-1 to start test run with the operation mode set by SW4-2.3Turn off SW4-1 to finish the test run.

• There may be a faint knocking sound around the machine room after power is supplied, but this isno problem with product because the linear expansion pipe is just moving to adjust opening pulse.

• There may be a knocking sound around the machine room for several seconds after compressor starts operating, but this is no problem with product because the check valve, itself, generates the sound because pressure difference is small in the refrigerant circuit.

Note:The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1,change the operation mode and restart the test run by SW4-1.)

OFF1 2

ON

<SW4>

A B

C D

A Stop C operationB Cooling D Heating

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12 TROUBLESHOOTING

<Error code display by self-diagnosis and actions to be taken for service (summary)>Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit.Actions to be taken for service, which depends on whether or not the inferior phenomenon is reoccurring at service, are sum-marized in the table below. Check the contents below before investigating details.

12-1. TROUBLESHOOTING

Unit conditions at service Error code Actions to be taken for service (summary)

The inferior phenomenon isreoccurring.

Displayed

Not displayed

Judge what is wrong and take a corrective action according to “12-4. Self-diagnosis action table”.

Conduct trouble shooting and ascertain the cause of theinferior phenomenon according to “12-5. Troubleshooting by inferior phenomena”.

The inferior phenomenon is not reoccurring.

Logged

Not logged

1Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise and etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the inferior phenomenon occurred, matters related to wiring and etc. 2Reset error code logs and restart the unit after finishing service.3There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

1Re-check the abnormal symptom.2Conduct trouble shooting and ascertain the cause of the inferior phenomenon according to “12-5. Troubleshooting by inferior phenomena”.3Continue to operate unit for the time being if the cause is not ascertained.4There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

12-2. CHECK POINT UNDER TEST RUN

(1) Before test run• After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leak-

age, loosened connections and incorrect polarity.• Measure impedance between the ground and the power supply terminal block(L, N) on the outdoor unit by 500V Merger and

check that it is 1.0M" or over.wDon’t use 500V Merger to indoor/outdoor connecting wire terminal block(S1, S2, S3) and remote controller terminal block

(1, 2). This may cause malfunction.• Make sure that test run switch (SW4) is set to OFF before turning on power supply.• Turn on power supply twelve hours before test run in order to protect compressor.• For specific models which requires higher ceiling settings or auto-recovery feature from power failure, make proper changes

of settings referring to the description of “Selection of Functions through Remote Controller”.Make sure to read operation manual before test run. (Especially items to secure safety.)

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[TEST] button

Pipe (liquid) temperature

Displays the remainingtest run time.

"TEST RUN" and the currently selectedoperation mode are displayed altemately.

A

B

C

• In case of test run, the OFF timer will be activated, and the test run will automatically stop after two hours.• The room temperature display section shows the pipe temperature of indoor units during the test run.• Check that all the indoor units are running properly in case of simultaneous twin and triple operation. Malfunctions may not

be displayed regardless of incorrect wiring.w1 After turning on the power supply, the system will go into startup mode, “PLEASE WAIT” will blink on the display section of

the room temperature, and lamp(green) of the remote controller will flash.As to INDOOR BOARD LED, LED1 will be lit up, LED2 will either be lit up in case the address is 0 or turned off in case the address is not 0. LED3 will blink.As to OUTDOOR BOARD LED, LED1(green) and LED2(red) will light up. (After the startup mode of the system finishes, LED2(red) will be turned off.)In case OUTDOOR BOARD LED is digital display, — and — will be displayed alternately every second.

• If one of the above operations doesn’t function correctly, the causes written below should be considered. Find causes from the symptoms.The below symptoms are under test run mode. “startup” in the table means the display status of w1 written above.

Remote Controller DisplaySymptoms in test run mode

OUTDOOR BOARD LED Display Cause

Remote controller displays “PLEASE WAIT”, and cannot be operated.

After power is turned on, “PLEASE WAIT” is displayed for 3 minutes, then error code is displayed.

No display appears even when remote controller operation switch is turned on.(Operation lamp does not light up.)

Display appears but soon disappears even when remote controller is operated.

• After power is turned on, “PLEASE WAIT” is displayed for 2 minutes during system startup. (Normal)

• Incorrect connection of outdoor terminal block (L1, L2, L3 and S1, S2, S3.)

• Outdoor unit’s safeguard installation connector is open.

• Incorrect wiring between the indoor and outdoor unit (Polarity is wrong for S1, S2, S3.)• Remote controller transmission wire short.• There is no outdoor unit of address 0. (Address is other than 0.)• Remote controller transmission wire open.• After canceling function selection, operation is not possible for about 30 seconds. (Normal)

After “startup” is displayed, only green lights up. <00>After “startup” is displayed, green(once) and red(once) blink alternately. <F1>After “startup” is displayed, green(once) and red(twice) blink alternately. <F3, F5, F9>After “startup” is displayed, green(twice) and red(once) blink alternately. <EA. Eb>

After “startup” is displayed, only green lights up. <00>

After “startup” is displayed, only green lights up. <00>

< > indicates digital display.

2. Press TEST button twice.

1. Turn on the main power supply.

3. Press OPERATION SWITCH button.

4. Press AIR DIRECTION button.

5. Check the outdoor unit fan for correct running.

6. Press the ON/OFF button to reset the test run in progress.

7. Register the contact number.

While the room temperature display on the remote controller is “PLEASE WAIT”, the remote controller is disabled. Wait until “PLEASE WAIT” disappears before using remote controller. “PLEASE WAIT” appears for about 2 minutes after power supply is turned on. w1

The outdoor unit features automatic capacity control to provide optimum fan speeds. Therefore, the fan keeps running at a low speed to meet the current outside air condition unless it exceeds its available maximum power. Then, in actuality, the fan may stop or run in the reverse direction depending on the outside air, but this does not mean malfunction.

Check for correct motion of auto-vanes.

Cooling mode: Check if cool air blows and water is drained.Heating mode: Check if warm air blows. (It takes a little while until warm air blows.)

The TEST RUN appears on the screen.

Operating procedures

B

C

A

w Press the remote controller’s CHECK button twice to perform self-diagnosis. See the table below for the contents of LCDdisplay.

LCD Contents of inferior phenomenaP1P2P4P5P6P8P9Fb

Abnormality of room temperature thermistorAbnormality of pipe temperature thermistor/LiquidAbnormality of drain sensorDrain overflow protection is working.Freezing/overheating protection is working.Abnormality of pipe temperatureAbnormality of pipe temperature thermistor/Cond./EvaAbnormality of indoor controller board

LCD Contents of inferior phenomenaU1~UPF3~F9E0~E5E6~EF

----FFFF

Malfunction outdoor unitMalfunction outdoor unitRemote controller transmitting errorIndoor/outdoor unit communication errorNo error historyNo applied unit

LED1 (microcomputer power supply)

LED2 (remote controller)

LED3 (indoor/outdoor communication)

Lits when power is supplied.Lits when power is supplied for wired remote controller.The indoor unit should be connected to the outdoor unit with address “0” setting.

Flash when indoor and outdoor unit are communicating.

See the table below for details of the LED display (LED 1, 2, 3) on the indoor controller board.

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ON/OFF TEMP

FAN

VANEMODE

CHECK LOUVER

TEST RUN

AUTO STOP

AUTO START

h

min

TEST RUN

RESETSET CLOCK

7

5

6

2

3,4

Test run [for wireless remote controller]Measure an impedance between the power supply terminal block onthe outdoor unit and ground with a 500V Megger and check that it isequal to or greater than 1.0M".1 Turn on the main power to the unit.2 Press the button twice continuously.

(Start this operation from the status of remote controller displayturned off.)A and current operation mode are displayed.

3 Press the ( ) button to activate mode, thencheck whether cool air is blown out from the unit.

4 Press the ( ) button to activate mode, thencheck whether warm air is blown out from the unit.

5 Press the button and check whether strong air is blown outfrom the unit.

6 Press the button and check whether the auto vane operatesproperly.

7 Press the ON/OFF button to stop the test run.

Note:• Point the remote controller towards the indoor unit receiver

while following steps 22 to 77.• It is not possible to run the in FAN, DRY or AUTO mode.

MODE

MODECOOL

HEAT

TEST RUN

FAN

VANE

TEST RUN

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12-3. HOW TO PRECEED "SELF-DIAGNOSIS"12-3-1. When a Problem Occurs During OperationIf a problem occurs in the air conditioner, the indoor and outdoor units will stop,and the problem is shown in the remote controller display.[CHECK] and the refrigerant address are displayed on the temperature

display, and the error code and unit number are displayed alternately asshown below.

1 (If the outdoor unit is malfunctioning, the unit number will be "00".)2 In the case of group control, for which one remote controller controls

multiple refrigerant systems, the refrigerant address and error code of theunit that first experienced trouble (i.e., the unit that transmitted the errorcode) will be displayed.

3 To clear the error code, press the ON/OFF button.

When using remote-/local-controller combined operation, cancel the error code after turning off remote operation. During

central control by a MELANS controller, cancel the error code by pressing the ON/OFF button.

12-3-2. Self-Diagnosis During Maintenance or ServiceSince each unit has a function that stores error codes, the latest check code can be recalled even if it is cancelled by the remotecontroller or power is shut off.

Check the error code history for each unit using the remote controller.1 Switch to self-diagnosis mode.

H Press the CHECK button twice within three seconds. The display contentwill change as shown below.

2 Set the unit number or refrigerant address you want to diagnose.

F Press the [TEMP] buttons ( and ) to select the desired numberor address. The number (address) changes between [01] and [50] or [00]

3 Display self-diagnosis results.<When there is error code history>(For the definition of each error code, refer to the indoor unit's installation manual or service handbook.)

4 Reset the error history.Display the error history in the diagnosis result display screen (see step 3).

F

E

G

C D

H

B

A

I

Error code (2 or 4 digits)

(Alternating Display)

Address (3 digits) or unit number (2 digits)

The refrigerant address will begin to flashapproximately three seconds after beingselected and the self-diagnosis process will begin.

Unit number or refrigerant addressto be diagnosed

Error code (2 or 4 digits)

(Alternating Display)

Address (3 digits) or unit number (2 digits)

<When there is no error code history> <When there is no corresponding unit>

and [15].

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Transmission data from remote controller

Transmission data on transmission path

When the number of data errors is "02":

D Press the ON/OFF button twice within three seconds. The self-diagnosis

address or refrigerant address will flash.

When the error history is reset, the display will look like the one shown below.However, if you fail to reset the error history, the error content will be displayed again.

5 Cancel self-diagnosis.Self-diagnosis can be cancelled by the following two methods.

H Press the CHECK button twice within three seconds. ➔ Self-diagnosis will be cancelled and the screen will return to the previous state in effect before the start

of self-diagnosis.

5 Press the ON/OFF button. ➔ Self-diagnosis will be cancelled and the indoor unit will stop.

12-3-3. Remote Controller Diagnosis

If the air conditioner cannot be operated from the remote controller, diagnose the remote controller as explained below.

1 First, check that the power-on indicator is lit.If the correct voltage (DC12 V) is not supplied to the remote controller, theindicator will not light.If this occurs, check the remote controller's wiring and the indoor unit.

2 Switch to the remote controller self-diagnosis mode.

H Press the CHECK button for five seconds or more. The display content will

change as shown below.

A Press the FILTER button to start self-diagnosis.

3 Remote controller self-diagnosis result

[When the remote controller is functioning correctly]

Check for other possible causes, as there is no problem with the remotecontroller.

[When the remote controller malfunctions](Error display 1) "NG" flashes. ➝ The remote controller's transmitting-receiv-

ing circuit is defective.

The remote controller must be replaced with a new one.

[Where the remote controller is not defective, but cannot be operated.](Error display 2) [E3], [6833] or [6832] flashes. ➝ Transmission is not possible.

There might be noise or interference on the transmission path, or the indoor unitor other remote controllers are defective. Check the transmission path and othercontrollers.

(Error display 3) "ERC" and the number of data errors are displayed.➝ Data error has occurred.

The number of data errors is the difference between the number of bits sent fromthe remote controller and the number actually transmitted through the transmis-sion path. If such a problem is occurring, the transmitted data is affected by noise,etc. Check the transmission path.

4 To cancel remote controller diagnosis

H Press the CHECK button for five seconds or more. Remote controller diagnosis will be cancelled, "PLEASE WAIT" and operation lamp will flash. Afterapproximately 30 seconds, the state in effect before the diagnosis will be restored.

Power on indicator

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[Procedure]1. Press the CHECK button twice.

2. Press the temperaturebuttons.

3. Point the remote controller at the sensor on the indoor unit andpress the HOUR button.

4. Point the remote controller at thesensor on the indoor unit andpress the ON/OFF button.

• "CHECK" lights, and refrigerant address "00" flashes.

• Check that the remote controller'sdisplay has stopped before continuing.

• Select the refrigerant address of theindoor unit for the self-diagnosis.

Note: Set refrigerant address using the outdoor unit’s DIP switch (SW1).(For more information, see theoutdoor unit installation manual.)

• If an air conditioner error occurs, theindoor unit's sensor emits an intermit-tent buzzer sound, the operation lightflashes, and the error code isoutput.(It takes 3 seconds at most for error code to appear.)

• The check mode is cancelled.

<Malfunction-diagnosis method at maintenance service>

12-3-4. Malfunction-diagnosis method by wireless remote controller<In case of trouble during operation>When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to informunusual stop.

ON/OFF TEMP

FAN

VANEMODE

CHECK LOUVER

TEST RUN

AUTO STOP

AUTO START

h

min

RESETSET CLOCK

CHECKCHECKdisplay

Temperaturebutton

CHECKbutton

Refrigerantaddressdisplay

HOURbutton

ON/OFFbutton

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[Output pattern A] Errors detected by indoor unit

[Output pattern B]

E9

*1 If the beeper does not sound again after the initial two beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on, there are no error records.

*2 If the beeper sounds three times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial two beeps to confirm the self-check start signal was received, the specified refrigerant address is incorrect.

OPERATIONINDICATORlamp flashpattern

Beep Beep Beep Beep Beep Beep Beep

OffApprox. 2.5 sec.

OnApprox. 3 sec.

On0.5 sec.

On0.5 sec.

On0.5 sec.

On0.5 sec.

OffApprox. 2.5 sec.

OnApprox. 3 sec.

On0.5 sec.

On0.5 sec.

· · · Repeated

Number of flashes/beeps in pattern indicates the checkcode in the following table (i.e., n=5 for “U2”)

Number of flashes/beeps in pattern indicatesthe check code in the following table

nth1st 2nd 3rd 1st 2nd

Self-checkstarts(Start signalreceived)

Beeper sounds

[Output pattern B]

OPERATIONINDICATORlamp flashpattern

Beep Beep Beep Beep Beep Beep Beep

OffApprox. 2.5 sec.

On0.5 sec.

On0.5 sec.

On0.5 sec.

On0.5 sec.

OffApprox. 2.5 sec.

On0.5 sec.

On0.5 sec.

· · · Repeated

Number of flashes/beeps in pattern indicates the checkcode in the following table (i.e., n=5 for “P5”)

Number of flashes/beeps in pattern indicatesthe check code in the following table

nth1st 2nd 3rd 1st 2nd

Self-checkstarts(Start signalreceived)

Beeper sounds

• Refer to the following tables for details on the check codes.[Output pattern A]

Beeper sounds/OPERATIONINDICATOR lamp flashes Check code

Symptom Remark

(Number of times)

Wireless remote controller Wired remote controller

Beeper sounds/OPERATIONINDICATOR lamp flashes Check code

(Number of times)

Wireless remote controller Wired remote controller

1 P1 Intake sensor error

P9 Pipe (TH5) sensor error2

P2 Pipe (TH2) sensor error

3 E6,E7 Indoor/outdoor unit communication error

4 P4 Drain sensor error5 P5 Drain pump error6 P6 Freezing/Overheating safeguard operation7 EE Communication error between indoor and outdoor units8 P8 Pipe temperature error9 E4, E5 Remote controller signal receiving error

10 –

11 –

–

–

Errors detected by unit other than indoor unit (outdoor unit, etc.)

Symptom Remark

1Indoor/outdoor unit communication error

2(Transmitting error) (Outdoor unit)

3 Open/short of outdoor unit thermistors4 Compressor overcurrent interruption (When compressor locked)

5Abnormal high discharging temperature/49C worked/insufficient refrigerant

6Abnormal high pressure (63H worked)/Overheating safeguard operation

7 Abnormal temperature of heat sink8 Outdoor unit fan safeguard stop9 Compressor overcurrent interruption/Abnormal of power module10 Abnormality of super heat due to low discharge temperature

11Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit/Current sensor error

1213

U2

U5

UPU3,U4UF

U1,Ud

U8U6U7

U9,UH

Others

––

––

14 Other errors

For details, checkthe LED display of the outdoor controller board.

12 Fb Indoor unit control system error (memory error, etc.)– E0, E3– E1, E2 Remote controller control board error

Remote controller transmission error

Compressor overcurrent interruption

As for indoor unit, refer to indoor unit's service manual.

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12-4. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is put on> (Note 1) Refer to indoor unit section for code P and code E.

Error Code Meaning of error code and detection method Case Judgment and action

None —

1 No voltage is supplied to terminalblock(TB1) of outdoor unit.a) Power supply breaker is put

off.b) Contact failure or discon-

nection of power supply terminal.

c) Open phase (L2 or N phase)2 Electric power is not supplied to

outdoor controller circuit board.a) Disconnection of connector

(CNDC)

3 Disconnection of outdoor noisefilter circuit board or parts failurein outdoor noise filter circuitboard.

4 Defective outdoor controller circuit board.

1 Check following items.a) Power supply breakerb) Connection of power supply terminal block.

(TB1)c) Connection of power supply terminal block.

(TB1)

2 Check connection of the connector (CNDC)on the outdoor controller circuit board. Check connection of the connector, (CNDC)the outdoor noise filter circuit board. Refer to 12-9.

3 a) Check connection of outdoor noise filter circuit board.

b) Replace outdoor noise filter circuit board.Refer to 12-9.

4 Replace controller board (When items aboveare checked but the units can not be repaired.)

F3(5202)

63L connector openAbnormal if 63L connector circuit is openfor three minutes continuously after powersupply.63L: Low-pressure switch

1 Disconnection or contact failureof 63L connector on outdoorcontroller circuit board.

2 Disconnection or contact failureof 63L.

3 63L is working due to refriger-ant leakage or defective parts.


1 Check connection of 63L connector on outdoor controller circuit board. Refer to 12-9.

2 Check the 63L side of connecting wire.

3 Check refrigerant pressure.Charge additional refrigerant.Check continuity by tester.Replace the parts if the parts are defective.

4 Replace outdoor controller circuit board.

F9(4119)

2 connector openAbnormal if both 63H and 63L connectorcircuits are open for three minutes continu-ously after power supply.

63H: High-pressure switch63L: Low-pressure switch

1 Disconnection or contact failureof connector (63H,63L) on outdoor controller circuit board.

2 Disconnection or contact failureof 63H, 63L.

3 63H and 63L are working dueto defective parts.


1 Check connection of connector(63H,63L) on outdoor controller circuit board. Refer to 12-9.

2 Check the 63H and 63L side of connectingwire.

3 Check continuity by tester.Replace the parts if the parts are defective.


F5(5201)

63H connector openAbnormal if 63H connector circuit is openfor three minutes continuously after powersupply.63H: High-pressure switch

1 Disconnection or contact failureof 63H connector on outdoorcontroller circuit board.

2 Disconnection or contact failureof 63H.

3 63H is working due to defectiveparts.


1 Check connection of 63H connector on outdoor controller circuit board. Refer to 12-9.

2 Check the 63H side of connecting wire.

3 Check continuity by tester.Replace the parts if the parts are defective.


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Error Code Meaning of error code and detection method Judgment and action

Eb(6845)

Mis-wiring of indoor/outdoor unit connecting wire (converse wiring ordisconnection)Outdoor controller circuit board can automatically set the unit number of indoorunits.Abnormal if the indoor unit number can not be set within four minutes after poweron because of mis-wiring (converse wiringor disconnection) of indoor/outdoor unitconnecting wire.

EC(6846)

Start-up time overThe unit can not finish start-up processwithin four minutes after power on.

Case

1 Contact failure of indoor/outdoor unit connecting wire.

2 Diameter or length of indoor/outdoor unit connecting wire isout of specified capacity.

7 Two or more outdoor unitshave refrigerant address “0” .(In case of group control)

8 Noise has entered into powersupply or indoor/outdoor unitconnecting wire.

1 Contact failure or mis-wiring ofindoor/outdoor unit connectingwire.

2 Diameter or length ofindoor/outdoor unit connectingwire is out of specified capacity.

4 Defective transmitting receivingcircuit of outdoor controller circuitboard.

5 Defective transmitting receivingcircuit of indoor controller circuitboard.

6 Defective indoor power circuitboard.


8 Noise has entered into powersupply or indoor/outdoor unitconnecting wire.

Indoor/outdoor unit connector mis-wiring, excessive number of units(5 units or more)1. Outdoor controller circuit board can

automatically check the number of connected indoor units. Abnormal if thenumber cannot be checked automaticallydue to mis-wiring of indoor/outdoor unitconnecting wire and etc. after power isturned on for 4 minutes.

2. Abnormal if outdoor controller circuitboard recognizes the number of connected indoor units as “5 units ormore”.

1 Check disconnection or looseness or polarityof indoor/outdoor unit connecting wire ofindoor and outdoor units.

2 Check diameter and length of indoor/outdoorunit connecting wire.Total wiring length: 80m(including wiring connecting each indoor unitand between indoor and outdoor unit)Also check if the connection order of flatcable is S1, S2, S3.

3 Check the number of indoor units that areconnected to one outdoor unit. (If EA isdetected)

4~6 Put the power off once, and on again to check.Replace outdoor controller circuit board, indoor controller circuit board or indoor

power board if abnormality occurs again.

7 Check if refrigerant addresses (SW1-3 toSW1-6 on outdoor controller circuit board)are overlapping in case of group control system.

8 Check transmission path, and remove thecause.

w The descriptions above, 1-8, are for EA, Eband EC.

1 Contact failure or mis-wiring ofindoor/outdoor unit connectingwire.

2 Diameter or length ofindoor/outdoor unit connectingwire is out of specified capacity.

3 5 or more indoor units are connected to one outdoor unit.

4 Defective transmitting receivingcircuit of outdoor controller circuit board.

5 Defective transmitting receivingcircuit of indoor controller cir-cuit board.

6 Defective indoor power circuitboard.


8 Noise has entered into powersupply or indoor / outdoor unit connecting wire.

EA(6844)

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<Abnormalities detected while unit is operating>


U1(1302)

Abnormal high pressure (High-pressureswitch 63H worked)Abnormal if high-pressure switch 63Hworked ( 3.6MPa ) during compressoroperation.

63H: High-pressure switch

1 Short cycle of indoor unit.2 Clogged filter of indoor unit.3 Decreased airflow caused by

dirt of indoor fan.4 Dirt of indoor heat exchanger.5 Locked indoor fan motor.6 Malfunction of indoor fan motor.7 Defective operation of stop

valve (Not full open).8 Clogged or broken pipe.9 Locked outdoor fan motor.0 Malfunction of outdoor fan

motor.1 Short cycle of outdoor unit.2 Dirt of outdoor heat exchanger.3 Decreased airflow caused by

defective inspection of outsidetemperature thermistor (It detects lower temperaturethan actual temperature.)

4 Disconnection or contact failureof connector (63H) on outdoorcontroller circuit board.

5 Disconnection or contact failureof 63H connection.

6 Defective outdoor controller cir-cuit board.

7 Defective action of linearexpansion valve.

8 Malfunction of fan driving circuit.

1~6Check indoor unit and repair defectives.

7 Check if stop valve is full open.

8 Check piping and repair defectives.9~2 Check outdoor unit and repair defectives.

3 Check the inspected temperature of outsidetemperature thermistor on LED display. (SW2 on A-Control Service Tool : Refer to 12-10.)

4~6Put the power off and check F5 is displayed when the power is put again.When F5 is displayed, refer to “Judgmentand action” for F5.

7 Check linear expansion valve.Refer to 12-6.

8 Replace outdoor controller circuit board orFAN controller circuit board.

Case

U2(1102)

Abnormal high discharging temperature(1) Abnormal if discharge temperature

thermistor (TH4) exceeds 125: or 110: continuously for 5 minutes.Abnormal if condenser/evaporator temperature thermistor (TH5) exceeds 40: during defrosting and discharge temperature thermistor (TH4) exceeds 110:.

(2) Abnormal if discharge super heat (Cooling: TH4 – TH5 / Heating: TH4 –

TH6) increases.All the conditions in A or B are detected simultaneously for 10 minutes continuously after 6 minutes past from compressor start-up (including the thermostat indication or recovery from defrosting).

<Condition A>• Heating mode• When discharge super heat is less

than 70 deg.• When the TH6 temp is more than the

value obtained by TH7 – 5 deg.• When the condensing temp of TH5 is

less than 35:.

<Condition B>• During comp operation (Cooling and

Heating)• When discharge super heat is less

than 80 deg in Cooling.• When discharge super heat is less

than 90 deg in Heating.• When condensing temp of TH6 is

more than –40:. (In Cooling only.)

1 Over-heated compressor oper-ation caused by shortage ofrefrigerant.

2 Defective operation of stopvalve.

3 Defective thermistor.4 Defective outdoor controller cir-

cuit board.5 Defective action of linear

expansion valve.

1 Check intake super heat.Check leakage of refrigerant.Charge additional refrigerant.

2 Check if stop valve is full open.34 Put the power off and check if U3 is dis-

played when the power is put again.When U3 is displayed, refer to “Judgementand action” for U3.

5 Check linear expansion valve.Refer to 12-6.

<Abnormalities detected while unit is operating>

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ThermistorsOpen detection Short detection

Symbol Name

TH3, TH32TH6TH7TH8

– 40: or below– 40: or below– 40: or below– 35: or below

90: or above90: or above90: or above170: or above

Thermistor <Outdoor pipe>Thermistor <Outdoor 2-phase pipe>

Thermistor <Outdoor>Internal thermistor


U5(4230)

Abnormal temperature of heat sinkAbnormal if heat sink thermistor TH8,which is built in the power module, detects temperature indicated below.RP200YHA......95:RP250YHA......95:

1 The outdoor fan motor islocked.

2 Failure of outdoor fan motor.3 Air flow path is clogged.4 Rise of ambient temperature.5 Defective thermistor.6 Defective input circuit of

outdoor power circuit board.7 Failure of outdoor fan drive

circuit.

12 Check the resistance of outdoor fan motorwiring.Refer to “12-6 HOW TO CHECK THE PART”.

3 Check air flow path for cooling.4 Check if there is something which causes

temperature rise around outdoor unit.(Upper limit of ambient temperature is 46:.)Turn off power, and on again to check if U5 is displayed within 30 minutes.If U4 is displayed instead of U5, follow the action to be taken for U4.

5 Check TH8 temperature by microcomputer.(SW2 on A-Control Service Tool: Refer to 12-10.)

6 Replace outdoor power circuit board.7 Replace outdoor controller circuit board.

Abnormality of power moduleCheck abnormality by driving power modulein case overcurrent is detected.

1 Outdoor stop valve is closed.2 Decrease of power supply voltage3 Looseness, disconnection or

converse of compressor wiringconnection.

4 Defective compressor.5 Defective outdoor power circuit

board.

1 Open stop valve.2 Check facility of power supply.3 Correct the wiring (U•V•W phase) to

compressor. Refer to 12-9.

4 Check compressor referring to 12-6.5 Replace outdoor power circuit board.

U6(4250)

U3(5104)

Open/short circuit of discharge temperature thermistor (TH4)Abnormal if open (3: or less) or short(217: or more) is detected during compressor operation.(Detection is inoperative for 10 minutes ofcompressor starting process and for 10minutes after and during defrosting.)

1 Disconnection or contact failure of connector (TH4) onthe outdoor controller circuitboard.

2 Defective thermistor.3 Defective outdoor controller

circuit board.

1 Check connection of connector (TH4) on theoutdoor controller circuit board.Check breaking of the lead wire for thermistor (TH4). Refer to 12-9.

2 Check resistance value of thermistor (TH4) ortemperature by microcomputer.(Thermistor/TH4: Refer to 12-6.)(SW2 on A-Control Service Tool: Refer to 12-10.)


U4TH3, TH32:5105(TH6:5107)(TH7:5106)(TH8:5110)

Open/short of outdoor unit thermistors(TH3, TH32, TH6, TH7, and TH8)Abnormal if open or short is detected during compressor operation.Open detection of thermistors TH3 andTH6 is inoperative for 10 seconds to 10minutes after compressor starting and 10minutes after and during defrosting.WCheck which unit has abnormality in its

thermistor by switching the mode of SW2.(Refer to 12-10.)

1 Disconnection or contact failureof connectors.Outdoor controller circuit board: TH3, TH32, TH6/TH7Outdoor power circuit board:CN3

2 Defective thermistor.3 Defective outdoor controller

circuit board.

1 Check connection of connector (TH3, TH32,TH6/TH7) on the outdoor controller circuit board.Check connection of connector (CN3) on theoutdoor power circuit board.Check breaking of the lead wire for thermistor(TH3, TH32, TH6,TH7,TH8). Refer to 12-9.

2 Check resistance value of thermistor (TH3,TH32, TH6,TH7,TH8) or check temperatureby microcomputer. (Thermistor/TH3,TH32,TH6,TH7,TH8: Refer to12-6.)(SW2 on A-Control Service Tool: Refer to 12-10.)

3 Replace outdoor controller circuit board.WEmergency operation is available in case of

abnormalities of TH3, TH32, TH6 and TH7. Refer to 12-8.

( )

( )

Compressor overcurrent interruption(When compressor locked)Abnormal if overcurrent of DC bus or compressor is detected within 30 secondsafter compressor starts operating.

1 Stop valve is closed.2 Decrease of power supply

voltage.3 Looseness, disconnection or



board.

1 Open stop valve.2 Check facility of power supply.

3 Correct the wiring (U•V•W phase) to compressor.

4 Check compressor.Refer to 12-6.

5 Replace outdoor power circuit board.

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UL(1300)

Abnormal low pressure (63L worked)Abnormal if 63L is worked (under-0.03MPa) during compressor operation.63L: Low-pressure switch

1 Stop valve of outdoor unit isclosed during operation.

2 Disconnection or loose connectionof connector (63L) on outdoorcontroller circuit board.

3 Disconnection or loose connection of 63L.

4 Defective outdoor controller cir-cuit board.

5 Leakage or shortage of refrigerant.6 Malfunction of linear expansion

valve.

1 Check stop valve.

2~4 Put the power off and on again to check if F3 is displayed on restarting.If F3 is displayed, follow the F3 processingdirection.

5 Correct to proper amount of refrigerant.6 Check linear expansion valve.

Refer to 12-6.

Case

UF(4100)

Compressor overcurrent interruption(When compressor locked)Abnormal if overcurrent of DC bus or compressor is detected within 30 secondsafter compressor starts operating.

1 Stop valve is closed.2 Decrease of power supply

voltage.3 Looseness, disconnection or



board.

1 Open stop valve.2 Check facility of power supply.

3 Correct the wiring (U•V•W phase) to compressor.Refer to 12-9.

4 Check compressor.Refer to 12-6.


UH(5300)

Current sensor errorAbnormal if current sensor detects –1.5A to1.5A during compressor operation. (Thiserror is ignored in case of test run mode.)

1 Disconnection of compressorwiring.

2 Defective circuit of current sensor on outdoor power circuit board.

1 Correct the wiring (U•V•W phase) to compressor. Refer to 12-9.


UP(4210)

Compressor overcurrent interruptionAbnormal if overcurrent DC dc bus or com-pressor is detected after compressor startsoperating for 30 seconds.

1 Stop valve of outdoor unit isclosed.

2 Decrease of power supply volt-age.

3 Looseness, disconnection orconverse of compressor wiringconnection.

4 Defective fan of indoor/outdoorunits.

5 Short cycle of indoor/outdoorunits.

6 Defective input circuit of out-door controller circuit board.

7 Defective compressor.

8 Defective outdoor power circuitboard.

1 Open stop valve.2 Check facility of power supply.3 Correct the wiring (U•V•W phase) to

compressor. Refer to 12-9.4 Check indoor/outdoor fan.5 Solve short cycle.6 Replace outdoor controller circuit board.7 Check compressor.

Refer to 12-6.W Before the replacement of the outdoor

controller circuit board, disconnect the wiring to compressor from the outdoor power circuit board and check the output voltage among phases, U, V, W, during test run. No defect on board if voltage among phases (U-V, V-W and W-U) is same. Make sure to perform the voltage check with same performing frequency.


U9(4220)

Abnormality such as overvoltage orvoltage shortage and abnormal synchronous signal to main circuit

Abnormal if any of followings are detectedduring compressor operation;• Instantaneous decrease of DC bus voltageto 400V.• Increase of DC bus voltage to 760V.• Decrease of input current of outdoor unit

to 0.5A only if operation frequency is morethan or equal to 40Hz or compressor current is more than or equal to 5A.

1 Decrease of power supply voltage.2 Defective 52C drive circuit of

outdoor power circuit board.3 Disconnection or loose

connection of CN5 on the outdoor power circuit board oroutdoor noise filter circuitboard.

4 Defective ACCT of outdoornoise filter circuit board.

5 Disconnection or loose connection of CN2 on the outdoor power circuit board.

1 Check the facility of power supply.2 Replace outdoor power circuit board.

3 Check CN5 wiring on the outdoor power circuit board or outdoor noise filter circuitboard.Refer to 12-9.

4 Replace outdoor noise filter circuit board.

5 Check CN2 wiring on the outdoor power circuit board.Refer to 12-9.

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E9(6841)

Indoor/outdoor unit communicationerror (Transmitting error) (Outdoor unit)(1) Abnormal if “0” receiving is detected 30

times continuously though outdoor con-troller circuit board has transmitted “1”.

(2) Abnormal if outdoor controller circuitboard could not find blank of transmissionpath for three minutes.

1 Indoor/ outdoor unit connectingwire has contact failure.

2 Defective communication circuitof outdoor controller circuit board.

3 Noise has entered power supply.4 Noise has entered indoor/ out-

door unit connecting wire.

1 Check disconnection or looseness ofindoor/outdoor unit connecting wire.

2~4 Put the power off, and on again to check.Replace outdoor controller circuit board ifabnormality is displayed again.

EF(6607

or6608)

Non defined error codeThis code is displayed when non definederror code is received.

1 Noise has entered transmis-sion wire of remote controller.

2 Noise has entered indoor/ out-door unit connecting wire.

3 Outdoor unit is not a series ofpower-inverter.

4 Model name of remote con-troller is PAR-S25A.

12 Put the power off, and on again to check. Replace indoor controller circuit board oroutdoor controller circuit board if abnormal-ity is displayed again.

3 Replace outdoor unit with power-inverter typeoutdoor unit.

4 Replace remote controller with MA remotecontroller.

Case

Ed(0403)

Serial communication error1.Abnormal if serial communication

between outdoor controller circuit board and outdoor power circuit board is defective.

1 Breaking of wire or contact failure of connector CN2between the outdoor controllercircuit board and the outdoorpower circuit board.

2 Breaking of wire or contact failure of connector CN4between the outdoor controllercircuit board and the outdoorpower circuit board.

3 Defective communication circuitof outdoor power circuit board

4 Defective communication circuitof outdoor controller circuit boardfor outdoor power circuit board

12 Check connection of each connector CN2and CN4 between the outdoor controllercircuit board and the outdoor power circuitboard.



1 Breaking of wire or contact failure of connector betweenoutdoor controller circuit boardand M-NET board

2 Contact failure of M-NET boardpower supply line

3 Noise has entered into M-NETtransmission wire.

2. Abnormal if communication between outdoor controller circuit board and M-NET board is not available.

1 Check disconnection, looseness, or breaking ofconnection wire between outdoor controller cir-cuit board (CNMNT) and M-NET board (CN5).

2 Check disconnection, looseness, or breaking ofconnection wire between outdoor controller cir-cuit board(CNMNT) and M-NET board (CND).

3 Refer to “ 10-3. M-NET Wiring method ”.

E8(6840)

Indoor/outdoor unit communicationerror (Signal receiving error)(Outdoor unit)(1) Abnormal if outdoor controller circuit

board could not receive anything normally for three minutes.

1 Contact failure of indoor/out-door unit connecting wire.

2 Defective communication circuitof outdoor controller circuit board.

3 Defective communication cir-cuit of indoor controller circuitboard.

4 Noise has entered into indoor/outdoor unit connecting wire.

1 Check disconnection or looseness of indoor/outdoor unit connecting wire of indoor or out-door units.

2~4 Put the power off, and on again to check.Replace indoor controller circuit board oroutdoor controller circuit board if abnormal-ity is displayed again.

(Note) Refer to indoor unit’s service manual for error code E0~E7.

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A0(6600)

Address duplicate definitionThis error is displayed when transmissionfrom the units of same address is detect-ed.Note) The address and attribute displayed

at remote controller indicate the con-troller that detected abnormality.

1 There are two or more sameaddress of controller of out-door unit, indoor unit, FRESHMASTER, or LOSSNAY.

2 Noise has entered into trans-mission signal and signal wastransformed.

Search the unit with same address as abnormalityoccurred. If the same address is found, shut of thepower supply of outdoor unit and indoor unit andFRESH MASTER or LOSSNAY at the same timefor two minutes or more after the address is cor-rected, and put the power on again.Check transmission wave form or noise on trans-mission wire.

A2(6602)

Hard ware error of transmission processorTransmission processor intended to trans-mit “0”, but “1” appeared on transmissionwire.Note) The address and attribute display at

remote controller indicate the con-troller that detected abnormality.

1 Error is detected if wave form istransformed when wiring works oftransmission wire of outdoor unit,indoor unit, FRESH MASTER orLOSSNAY are done, or polarity ischanged with the power on andtransmission data collide each other.

2 Defective transmitting receivingcircuit of transmission processor.

3 Transmission data is changed bythe noise on transmission.

1 If the works of transmission wire is done withthe power on, shut off the power supply ofoutdoor unit and indoor unit and FRESHMASTER or LOSSNAY at the same time fortwo minutes or more, and put the power onagain.

2 Check transmission wave form or noise ontransmission wire.

A3(6603)

BUS BUSY1. Over error by collision damage

Abnormal if transmitting is not possiblefor 8-10 minutes continuously becauseof collision of transmission.

2. Data could not reach transmission wirefor 8-10 minutes continuously becauseof noise or etc.

Note) The address and attribute displayedat remote controller indicate the con-troller that detected abnormality.

1 Transmission processor couldnot transmit because short cyclevoltage of noise and the likehave entered into transmissionwire continuously.

2 Transmission quantity hasincreased and transmission isnot possible because there waswiring mistake of terminal blockfor transmission wire (TB3) andterminal block for central control(TB7) in outdoor unit.

3 Transmission are mixed with others and occupation rate ontransmission wire rose becauseof defective repeater (a functionto connector or disconnect trans-mission of control and centralcontrol system) of outdoor unit,then abnormality is detected.

1 Check if transmission wire of indoor unit,FRESH MASTER, LOSSNAY, or remote con-troller is not connected to terminal block forcentral control (TB7) of outdoor unit.

2 Check if transmission wore of indoor unit,FRESH MASTER or LOSSNAY is not con-nected to terminal block for transmissionwire of outdoor unit.

3 Check if terminal block for transmission wire(TB3) and terminal block for central control(TB7) is not connected.


<M-NET communication error> (Note) “Indoor unit” in the text indicates M-NET board in outdoor unit.


P8

1 Slight temperature differencebetween indoor room temperature and pipe <liquid or condenser / evaporator> temperature thermistor.• Shortage of refrigerant• Disconnected holder of pipe

<liquid or condenser / evaporator> thermistor

• Defective refrigerant circuit2 Converse connection of

extension pipe (on plural unitsconnection).

3 Converse wiring of indoor/outdoor unit connecting wire(on plural units connection).

4 Defective detection of indoorroom temperature and pipe<condenser / evaporator> temperature thermistor.

5 Stop valve is not opened completely.

Abnormality of pipe temperature<Cooling mode>Detected as abnormal when the pipe tem-perature is not in the cooling range 3 min-utes later of compressor start and 6 min-utes later of the liquid or condenser/evapo-rator pipe is out of cooling range.Note 1) It takes at least 9 min. to detect.Note 2) Abnormality P8 is not detected in

drying mode.Cooling range : Indoor pipe temperature

(TH2 or TH5) – intake temperature(TH1) [ -3 deg

TH: Lower temperature between: liquidpipe temperature and condenser/ evaporator temperature

<Heating mode>When 10 seconds have passed after thecompressor starts operation and the hotadjustment mode has finished, the unit isdetected as abnormal whencondenser/evaporator pipe temperature isnot in heating range within 20 minutes.

Note 3) It takes at least 27 minutes todetect abnormality.

Note 4) It excludes the period of defrosting(Detection restarts when defrostingmode is over)

Heating range : 3 deg [ (Condenser/Evaporator temperature(TH5) –intake temperature(TH1))

1~4 Check pipe <liquid or condenser /evaporator> temperature with room temperature display on remote controller and outdoor controller circuit board.Pipe <liquid or condenser / evaporator>temperature display is indicated by setting SW2 of outdoor controller circuitboard as follows.

23Check converse connection of extension pipe or converse wiring of indoor/outdoor unit connecting wire.

Conduct temperature check with outdoorcontroller circuit board after connecting ‘A-Control Service Tool(PAC-SK52ST)’.( )

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

ON

OFF

1 2 3 4 5 6

ON

OFF

A-Control Service Tool SW2 setting

Temperature display of indoor liquid pipeIndoor 1

Temperature display of indoor liquid pipeIndoor 2

Temperature display of indoor condenser/evaporator pipe Indoor 1

Temperature display of indoor condenser/evaporator pipe Indoor 2

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A6(6606)

Communication error with communica-tion processorDefective communication between unitprocessor and transmission processorNote) The address and attribute display at

remote controller indicate the con-troller that detected abnormality.

1 Data of transmission proces-sor or unit processor is nottransmitted normally becauseof accidental trouble such asnoise or thunder surge.

2 Address forwarding from unitprocessor is not transmittednormally because of defectivetransmission processor hard-ware.

Shut of the power supply of outdoor unit andindoor unit and FRESH MASTER or LOSSNAYat the same time for two minutes or more, andput the power on again. System returns nor-mally if abnormality was accidental malfunction.If the same abnormality generates again,abnormality-generated controller may be defec-tive.

Continued to the next page.


A7(6607)

NO ACK signal1. Transmitting side controller detects

abnormal if a massage was transmittedbut there is no reply (ACK) that a mas-sage was received. Transmitting sidedetects abnormality every 30 seconds,six times continuously.

Note) The address and attribute displayedat remote controller is indicate thecontroller that did not reply (ACK).

Common factor that has no rela-tion with abnormality source.1 The unit of former address

does not exist as addressswitch has changed while theunit was energized.

2 Extinction of transmission wirevoltage and signal is caused byover-range transmission wire.• Maximum distance ······200m• Remote controller line ··(12m)

3 Extinction of transmission wirevoltage and signal is caused bytype-unmatched transmissionwire.Type ······

With shield wire- CVVS, CPEVS

With normal wire (no shield)-VCTF, VCTFK, CVV CVS, VVR, VVF, VCT

Diameter····1.25mm2 or more 4 Extinction of transmission wire

voltage and signal is causedby over-numbered units.

5 Accidental malfunction ofabnormality-detected controller(noise, thunder surge).

6 Defective of abnormality-gen-erated controller.

2. If displayed address or attribute is out-door unit,Indoor unit detects abnormality whenindoor unit transmitted to outdoor unitand there was no reply (ACK).

1 Contact failure of transmissionwire of outdoor unit or indoor unit.

2 Disconnection of transmissionconnector (CN2M) of outdoor unit.

3 Defective transmitting receiv-ing circuit of outdoor unit orindoor unit.

Always try the followings when the error “A7” occurs.

1 Shut off the power supply of outdoor unit andindoor unit and FRESH MASTER or LOSS-NAY at the same time for two minutes ormore, and put the power on again. If mal-function was accidental, the unit returns tonormal.

2 Check address switch of abnormality-gener-ated address.

3 Check disconnection or looseness of abnor-mality-generated or abnormality-detectedtransmission wire (terminal block and con-nector)

4 Check if tolerance range of transmission wireis not exceeded.

5 Check if type of transmission wire is corrector not.

If there were some trouble of 1-5 above,repair the defective, then shut off the powersupply of outdoor unit and indoor unit andFRESH MASTER or LOSSNAY at the sametime for two minutes or more, and put thepower on again.• If there was no trouble with 1-5 above in sin-

gle refrigerant system (one outdoor unit), con-troller of displayed address or attribute isdefective.

• If there was no trouble with 1-5 above in dif-ferent refrigerant system (two or more outdoorunits), judge with 6.

6 If address of abnormality source is theaddress that should not exist, there is theunit that memorizes nonexistent addressinformation. Delete useless address informa-tion with manual setting function of remotecontroller.Only the system FRESH MASTER or LOSS-NAY are connected to, or the system that isequipped with group setting of differentrefrigerant system.

If there was no trouble with 1-6 above,replace the controller board of displayedaddress or attribute.If the unit does not return normally, multi-con-troller board of outdoor unit may be defective(repeater circuit).Replace multi-controller board one by one tocheck if the unit returns normally.

3. If displayed address or attribute isindoor unit,Remote controller detects abnormalitywhen remote controller transmitted toindoor unit and there was no reply(ACK).

1 During group operation withindoor unit of multi- refrigerantsystem, if remote controllertransmit to indoor unit whileoutdoor unit power supply ofone refrigerant system is putoff or within two minutes ofrestart, abnormality is detected.

2 Contact failure of transmissionwire of remote controller orindoor unit.

3 Disconnection of transmissionconnector (CN2M) of indoor unit.

4 Defective transmitting receiv-ing circuit of indoor unit orremote controller.

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A7(6607)

5. If displayed address or attribute isFRESH MASTER, Indoor unit detects abnormality whenindoor unit transmitted to FRESH MAS-TER and there was no reply (ACK).

1 During sequential operation ofindoor unit and FRESH MAS-TER of other refrigerant sys-tem, if indoor unit transmits toFRESH MASTER while out-door unit power supply ofsame refrigerant system withFRESH MASTER is put off orwithin two minutes of restart,abnormality is detected.

2 Contact failure of transmissionwire of indoor unit or FRESHMASTER.

3 Disconnection of transmissionconnector (CN2M) of indoorunit or FRESH MASTER.

4 Defective transmitting receiv-ing circuit of indoor unit orFRESH MASTER.

6. If displayed address or attribute isLOSSNAY,Indoor unit detects abnormality whenindoor unit transmitted to LOSSNAY andthere was no reply (ACK).

1 If the power supply of LOSS-NAY is off, indoor unit detectsabnormality when it transmitsto LOSSNAY.

2 During sequential operation ofindoor unit and LOSSNAY ofother refrigerant system, ifindoor unit transmits to LOSS-NAY while outdoor unit powersupply of same refrigerant sys-tem with LOSSNAY is put offor within two minutes ofrestart, abnormality is detect-ed.

3 Contact failure of transmissionwire of indoor unit of LOSS-NAY.

4 Disconnection of transmissionconnector (CN2M) of indoorunit.

5 Defective transmitting receiv-ing circuit of indoor unit orLOSSNAY.

7. If displayed address or attribute isnonexistent,

1 The unit of former addressdoes not exist as addressswitch has changed while theunit was energized.

2 Abnormality is detected whenindoor unit transmittedbecause the address ofFRESH MASTER and LOSS-NAY are changed aftersequential operation ofFRESH MASTER and LOSS-NAY by remote controller.

From the previous page.

4. If displayed address or attribute isremote controller,Indoor unit detects abnormality whenindoor unit transmitted to remote con-troller and there was no reply (ACK).

1 During group operation withindoor unit of multi- refrigerantsystem, if indoor unit transmitto remote controller while out-door unit power supply of onerefrigerant system is put off orwithin two minutes of restart,abnormality is detected.

2 Contact failure of transmissionwire of remote controller orindoor unit.

3 Disconnection of transmissionconnector (CN2M) of indoorunit.

4 Defective transmitting receiv-ing circuit of indoor unit orremote controller.

Same as mentioned in “A7” of the previous page.

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12-5. TROUBLESHOOTING BY INFERIOR PHENOMENAPhenomena Factor Countermeasure

1. Remote controller display does notwork.

2. “PLEASE WAIT” display is remainedon the remote controller.

3. When pressing the remote controlleroperation switch the OPERATIONdisplay is appeared but it will beturned off soon.

1After cancelling to select function from the remotecontroller, the remote controller operation switch willbe not accepted for approx. 30 seconds.

1Normal operation

1At longest 2 minutes after the power supply “PLEASEWAIT” is displayed to start up.

2Communication error between the remote controllerand indoor unit.

3Communication error between the indoor and outdoorunit.

4Outdoor unit protection device connector is open.

1DC12V is not supplied to remote controller.(Power supply display is not indicated on LCD.)

2DC12~15V is supplied to remote controller, however,no display is indicated.

• “PLEASE WAIT” is not displayed. • “PLEASE WAIT” is displayed.

1Check LED2 on indoor controller circuitboard.(1) When LED2 is lit.

Check the remote controller wiring for breaking or contact failure.

(2) When LED2 is blinking.Check short circuit of remote controller wiring.

(3) When LED2 is not lit.Refer to No.3 below.

2Check the following.• Failure of remote controller if “PLEASE

WAIT” is not displayed• Refer to No.2 below if “PLEASE WAIT” is

displayed.

1Normal operation2Self-diagnosis of remote controller3“PLEASE WAIT” is displayed for 6 minutes

at most. In case of indoor/outdoor unitcommunication error. Check LED3 on indoor controller board.(1)When LED3 is not blinking.

Check indoor/outdoor connecting wire for mis-wiring.(Converse wiring of S1 and S2, or break of S3 wiring.)

(2)When LED3 is blinking.Indoor/outdoor connecting wire is nor-mal.

4Check LED display on outdoor controller circuit board. Refer to 12-10.Check protection device connector (63Land 63H) for contact failure.Refer to 12-9.


A8(6608)

M-NET•NO RESPONSEAbnormal if a massage was transmittedand there were reply (ACK) that massagewas received, but response commanddoes not return. Transmitting side detectsabnormality every 30 seconds, six timescontinuously.Note) The address and attribute displayed

at remote controller is indicate thecontroller that did not reply (ACK).

1 Transmitting condition isrepeated fault because ofnoise and the like.

2 Extension of transmission wirevoltage and signal is causedby over-range transmissionwire.• Maximum distance ······200m• Remote controller line ··(12m)

3 Extension of transmission wirevoltage and signal is causedby type-unmatched transmis-sion wire.Type ······

With shield wire- CVVS, CPEVS

With normal wire (no shield)-VCTF, VCTFK, CVV CVS, VVR, VVF, VCT

Diameter····1.25mm2 or more 4 Accidental malfunction of

abnormality-generated controller.


2 Shut off the power supply of outdoor unit andindoor unit and FRESH MASTER or LOSS-NAY at the same time for two minutes ormore, and put the power on again. If mal-function was accidental, the unit returns tonormal. If the same abnormality generatesagain, controller of displayed address andattribute may be defective.

4. Even controlling by the wirelessremote controller no beep is heardand the unit does not start operat-ing. Operation display is indicatedon wireless remote controller.

1The pair number settings of the wireless remotecontroller and indoor controller circuit board are mis-matched.

1Check the pair number settings.

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38

Phenomena Factor Countermeasure

7. Remote controller display works nor-mally and the unit performs heatingoperation, however, the capacitycannot be fully obtained.

1Linear expansion valve fault.Opening cannot be adjusted well due to linear expan-sion valve fault.

2Refrigerant shortage.3Lack of insulation for refrigerant piping.4Filter clogging.5Heat exchanger clogging.6Air duct short cycle .7Bypass circuit of outdoor unit fault.

1• Discharging temperature and indoor heat exchanger temperature does not rise.Inspect the failure by checking discharg-ing pressure.

• Replace linear expansion valve.2• If refrigerant leaks, discharging tempera

ture rises and LEV opening increases.Inspect leakage by checking the temperature and opening.

• Check pipe connections for gas leakage.3Check the insulation.4Open suction grill and check the filter.

Clean the filter by removing dirt or dust on it.

5• If the filter is clogged, indoor pipe temperature rises and discharging pressure increases. Check if heat exchanger is clogged by inspecting discharging pres-sure.

• Clean the heat exchanger.6Remove the shield.7Check refrigerant system during operation.

8. 1For 3 minutes after temperature adjuster turns off, the compressor will not start operating even if temperature adjuster is turned on.

2For 3 minutes after temperature adjuster turns on, the compressor will not stop operating even if temperature adjuster is turned off.(Compressor stops operating immediately when turning off by the remote controller.)

12Normal operation.(For protection of compressor)

12Normal operation

5. When operating by the wirelessremote controller, beep sound isheard, however, unit does not startoperating.

1No operation for 2 minutes at most after the powersupply ON.

2Hand-held remote controller operation is prohibited.• Remote controlling adaptor is connected to CN32on the indoor controller circuit board.

• Hand-held remote controller operation is prohibited by centralised controller etc. since it is connected to MELANS.

3Factor of No.2 above.

1Normal operation.

2Normal operation.

3Check the details of No.2 above.

6. Remote controller display works normally and the unit performscooling operation, however, thecapacity cannot be fully obtained.(The air does not cool well.)

1Refrigerant shortage.2Filter clogging.3Heat exchanger clogging.4Air duct short cycle.

1• If refrigerant leaks, discharging tempera-ture rises and LEV opening increases.Inspect leakage by checking the temperature and opening.

• Check pipe connections for gas leakage.2Open suction grill and check the filter.

Clean the filter by removing dirt or dust on it.

3• If the filter is clogged, indoor pipe temperature rises and discharging pressure increases. Check if heat exchanger is clogged by inspecting discharging pres-sure.

• Clean the heat exchanger.4Remove the shield.

9. Defective fan of outdoor units.(Not rotate)

1Check the winding resistance.Refer to 12-6.However, make sure to check the resis-tance after it gets cold enough ([87i15:),as there is a possibility that the tempera-ture protector housed in the fan motor isworking.

2Check CN2, CN5, CN6, TAB-U, TAB-V,TAB-W, TAB-W wiring.

3Replace outdoor fan controller circuit board.

1Defective fan motor (Winding open or shoot).

2Disconnection or loose connection of connector onoutdoor Fan controller circuit board.

3Defective Outdoor fan controller circuit board.

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39

How long is “PLEASE WAIT” kept being displayed on the

remote controller?

6 minutes or more

2 minutes or less

2 to 6 minutes

NO

NO

YES

YES

Are any error codes displayed on the

remote controller?

Are any error codes displayed on the LED?

Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller.

Check the display time of “PLEASE WAIT” after turning on the main power.

• “PLEASE WAIT” will be displayed during the start-up diagnosis after turning on the main power.

• Normal. The start-up diagnosis will be over in around 2 minutes.

• Mis-wiring of indoor/ outdoor connecting wire• Breaking of indoor/ outdoor connecting wire (S3)• Defective indoor controller board• Defective outdoor controller circuit board

• Refer to “Self-diagnosis action table” in order to solve the trouble.

• In case of communication errors, the display of remote controller may not match the LED display of the outdoor unit.

• Defective indoor controller board• Defective remote controller

Check the LED display of the outdoor controller circuit board.

Diagnosis flow Cause Inspection method and troubleshooting

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AC 198V to AC 264V?

AC 198V to AC 264V?

AC 198V to AC 264V?

DC 12V to DC 16V?

DC 12V to DC 16V?

NO

YES

NO

YES

NO

YES

YES

NO

YES

NO

Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.

Check the voltage among L(L3) and N on the terminal block (TB1) of the outdoor power circuit board.

Check the voltage of indoor controller board (CN2D).

Check the voltage of the unit after removing the indoor power board (CN2S).

Check the voltage between S1 and S2 on the terminal block (TB1) of the outdoor unit which is used to connect the indoor unit and the outdoor unit.

• Troubles concerning power supply.

• Check the power wiring to the outdoor unit.• Check the breaker.

• Bad wiring of the outdoor controller board.• The fuses on the outdoor controller circuit board are blown.

• Check the wiring of the outdoor unit.• Check if the wiring is bad. Check if the fuses are blown. The fuses on the outdoor controller circuit board will be blown when the indoor /outdoor connecting wire short-circuits.

• Bad wiring of the outdoor controller board.• The fuses on the outdoor controller circuit board are blown.

• Check if mis-wiring, breaking or poor contact is causing this problem. Indoor/outdoor connecting wire is polarized 3-core type. Connect the indoor unit and the outdoor unit by wiring each pair of S1, S2 and S3 on the both side of indoor/outdoor terminal blocks.

• Defective indoor power board

• Replace the indoor power board.

• Defective indoor controller board

• Replace the indoor controller board.

• Mis-wiring, breaking or poor connection of in door/outdoor connecting wire.

• Check if there is mis-wiring or breaking of wire.

Symptoms: Nothing is displayed on the remote controller 1


LED display of the indoor controller boardLED1 :LED2 : LED3 :

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AC 198V to AC 264V?

Are there looseness or disconnection of the indoor/outdoor connecting wire?

Is anything displayed?

DC 17V to DC 28V?

Is “E8” displayed?

Can all the indoor unit be operated?

Check the voltage between S2 and S3 on the terminal block of the outdoor unit.

NO

YES

Not lighting.

Blinking.

NO

YES

NO

YES

Not displayed.

Displayed.

YES

NO

YES

NO

Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.

Check the refrigerant address of the outdoor unit. (SW1-3 to 1-6)

Check the looseness or disconnection of the indoor/outdoor connecting wire.

Check the LED display of the outdoor unit after turning on the main power again.

Can the unit be restarted?

• Breaking or poor contact of the indoor/outdoor connecting wire.

• Fix the breaking or poor contact of the indoor/outdoor connecting wire.

• Defective outdoor controller circuit board.

• Replace the outdoor controller circuit board.

• Normal. Only the unit which has the refrigerant address “0” supplies power to the remote controller.

• Set the refrigerant address to “0”. In case of the multiple grouping system, recheck the refrigerant address again.

• Defective indoor power board.

• Replace the indoor power board.

• Defective outdoor power circuit board.

• Replace the outdoor power circuit board.

• Defective indoor controller board

• Replace the indoor controller board of the indoor unit which doesn’t operate.

• Defective outdoor controller circuit board.

• Replace the outdoor controller circuit board.

• Influence of electromagnetic noise.

• Not abnormal. There may be the influence of electromagnetic noise. Check the transmission wire and get rid of the causes.



LED display of the indoor controller boardLED1 :LED2 : LED3 : or

Check the status of the indoor controller board LED3 display.

Is the refrigerant address “0”?

NO

YES

NO

YES

Is “EA” or “Eb” displayed?

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DC 10V to DC 16V?YES

NO

Lighting

Blinking

Lighting

Blinking

Check the voltage of the terminal block (TB6) of the remote controller.

Check the status of the LED2 after disconnecting the remote controller wire from the terminal block (TB5) of the indoor unit.

• Defective remote controller.

• Replace the remote controller.

• Breaking or poor contact of the remote controller wire.

• Check if there is breaking or poor contact of the remote controller wire. Check the voltage of the terminal block (TB5) connecting the remote controller wire. If it is not between DC 10V and DC16V, the indoor controller board must be defective.

• The remote controller wire short-circuits.

• Check if the remote controller wire is short-circuited.

• Defective indoor controller board.

• Replace the indoor controller board.



LED display of the indoor controller boardLED1 :LED2 : or LED3 : —

Check the status of the LED2.

Check the status of the LED2.

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1 The operating display of remote controller does not come on.

Phone Calls From Customers How to Respond Note1 Check if power is supplied to air conditioner.

Nothing appears on the display unless power is supplied.

2 Unit cannot be restarted for a while after it’s stopped.

2 Wait around 3 minutes. to restart unit.The air conditioner is in a state of being protected by the microcomputer’s directive. Once the compressor is stopped, the unit cannot be restarted for 3 minutes. This control is also applied when the unit is turned on and off by remote controller or thermostat.

3 Error code appears and blinks on the display of remote controller.

Refer to “SELF-DIAGNOSIS ACTION TABLE”. Check if servicing is required for the error.

Display time of “FILTER” depends on the model. Long life filter: 2500 hrs.Regular filter: 100 hrs.

3 Error code will be displayed if any protection devices of the air conditioner are actuated.What is error code?

1 “PLEASE WAIT” is displayed on the screen.

1 Wait around 2 minutes.An automatic startup test will be conducted for 2 minutes when power is supplied to the air conditioner. “PLEASE WAIT” will be kept being

displayed while that time.

2 “FILTER” is displayed on the screen.

2 This indicates that it is time to clean the air filters. Clean the air filters. Press the FILTER button on the remote controller twice to clear “FILTER” from the display. See the operation manual that came with the product for how to clean the filters.

3 “STANDBY” is displayed on the screen.

3 This is displayed when the unit starts HEAT operation, when the thermostat puts the compressor in operation mode, or when the outdoor unit ends DEFROST operation and returns to HEAT operation. The display will automatically disappear around 10 minutes later. While “STANDBY” is displayed on the remote controller, the airflow amount will be restricted because the indoor unit’s heat exchanger is not fully heated up. In addition to that, the up/down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body. The up/down vane will return to the setting specified by the remote controller when “STANDBY” is released.

4 “DEFROST” is displayed on the screen. (No air comes out of the unit.)

4 The outdoor unit gets frosted when the outside temperature is low and the humidity is high. “DEFROST” indicates the DEFROST operation is being performed to melt this frost. The DEFROST operation ends in around 10 minutes (at most 15 minutes). During the DEFROST operation, the indoor unit’s heat exchanger becomes cold, so the blower is stopped. The up/down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body. The display will turn into “STANDBY” when DEFROST operation ends.

Unit does not operate at all.

Remote controller.

• Before repair Frequent calling from customers.

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Phone Calls From Customers How to Respondm Note1 Check the set temperature of remote controller. The outdoor unit cannot be operated if the set temperature is not appropriate. The outdoor unit operates in the following modes. COOL: When the set temperature is lower than the room temperature. HEAT: When the set temperature is higher than the room temperature.

2 Check if filters are not dirty and clogged. If filters are clogged, the airflow amount will be reduced and the unit capacity will be lowered. See the instruction manual that came with the product for how to clean the filters.

3 Check there is enough space around the air conditioner. If there are any obstacles in the air intake or air outlet of indoor/outdoor units, they block the airflow direction so that the unit capacity will be lowered.

1 An gas escaping sound is heard sometimes.

1 This is not a malfunction. This is the sound which is heard when the flow of refrigerant in the air conditioner is switched.

2 A cracking sound is heard sometimes.

2 This is not a malfunction. This is the sound which is heard when internal parts of units expand or contract when the temperature changes.

3 A buzzing sound is heard sometimes.

3 This is not a malfunction. This is the sound which is heard when the outdoor unit starts operating.

4 A ticking sound is heard from the outdoor unit sometimes.

4 This is not a malfunction. This is the sound which is heard when the blower of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition.

5 A sound, similar to water flowing, is heard from the unit.

5 This is not a malfunction. This is the sound which is heard when the refrigerant is flowing inside the indoor unit.

2 The fan speed doesn’t match the setting of the remote controller in HEAT operation.

The up/down vane will be automatically set to horizontal blow in these cases listed up on the left (1~3). After a while, the up/down vane will be automatically moved according to the setting of the remote controller.

2 This is not a malfunction. 1) When the HEAT operation starts, to prevent the unit from blowing cold air, the fan speed is gradually increased from zero to the set speed, in proportion to the temperature rise of the discharged air. 2) When the room temperature reaches the set temperature and the outdoor unit stops, the unit starts the LOW AIR operation. 3) During the HEAT operation, the DEFROST operation is performed to defrost the outdoor unit. During the DEFROST operation, the blower is stopped to prevent cold air coming out of the indoor unit.

Sound comes out from the air conditioner.

1 The fan speed doesn’t match the setting of the remote controller during DRY operation.(No air comes out sometimes during DRY operation.)

1 This is not a malfunction. During the DRY operation, the blower’s ON/OFF is controlled by the microcomputer to prevent overcooling and to ensure efficient dehumidification. The fan speed cannot be set by the remote controller during DRY operation.

Something is wrong with the blower…..

The room cannot be cooled or heated sufficiently.

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3 Air blows out for a while after HEAT operation is stopped.

Phone Calls From Customers How to Respond Note

3 This is not a malfunction. The blower is operating just for cooling down the heated-up air conditioner. This will be done within one minute. This control is conducted only when the HEAT operation is stopped with the electric heater ON.

However, this control is also applied to the models which has no electric heater.

“STANDBY” will be displayed on the remote controller in case of 1 and 2. “DEFROSTING” will be displayed on the screen in case of 3.

1 The airflow direction is changed during COOL operation.

1 If the up/down vane is set to downward in COOL operation, it will be automatically set to horizontal blow by the microcomputer in order to prevent water from dropping down. “1 Hr.” will be displayed on the remote controller if the up/down vane is set to downward with the fan speed set to be less than “LOW”.

2 The airflow direction is changed during HEAT operation. (The airflow direction cannot be set by remote controller.)

2 In HEAT operation, the up/down vane is automatically controlled according to the temperature of the indoor unit’s heat exchanger. In the following cases written below, the up/down vane will be set to horizontal blow, and the setting cannot be changed by remote controller. 1) At the beginning of the HEAT operation 2) While the outdoor unit is being stopped by thermostat or when the outdoor unit gets started to operate. 3) During DEFROST operation The airflow direction will be back to the setting of remote controller when the above situations are released.

3 The airflow direction doesn’t change. (Up/down vane, left/right louver)

3 1) Check if the vane is set to a fixed position. (Check if the vane motor connector is removed.) 2) Check if the air conditioner has a function for switching the air direction. 3) If the air conditioner doesn’t have that function, “NOT AVAILABLE” will be displayed on the remote controller when “AIR DIRECTION” or “LOUVER” button is pressed.

Something is wrong with the blower…..

Something is wrong with the airflow direction….

1 Check if you set ON/OFF timer. The air conditioner starts operating at the time designated if ON timer has been set before.

2 Check if any operations are ordered by distant control system or the central remote controller. While “CENTRALLY CONTROLLED INDICATOR” is displayed on the remote controller, the air conditioner is under the control of external directive.

The air conditioner starts operating even though any buttons on the remote controller are not pressed.

1 Check if you set ON/OFF timer. The air conditioner stops operating at the time designated if OFF timer has been set before.

The air conditioner stops even though any buttons on the remote controller are not pressed.

There might be a case that “CENTRALLY CONTROLLED INDICATOR” will not be displayed.

There might be a case that “CENTRALLY CONTROLLED INDICATOR” will not be displayed.

3 Check if power is recovered from power failure (black out). The units will automatically start operating when power is recovered after power failure (black out) occurs. This function is called “auto recovery feature from power ”.

2 Check if any operations are ordered by distant control system or the central remote controller. While “CENTRALLY CONTROLLED INDICATOR” is displayed on the remote controller, the air conditioner is under the control of external directive.

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Phone Calls From Customers How to Respond Note

This is not a malfunction.This may occur when the operation gets started in the room of high humidity.

A white mist is expelled from the indoor unit.

Cooling; when pipes or piping joints are cooled, they get sweated and water drips down.Heating; water drips down from the heat exchanger.* Make use of optional parts “Drain Socket” and “Drain pan” if these water needs to be collected and drained out for once.

Water or moisture is expelled from the outdoor unit.

Batteries are being exhausted. Replace them and press the reset button of remote controller.

The display of wireless remote controller gets dim or doesn’t come on.The indoor unit doesn’t receive a signal from remote controller at a long distance.

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12-6. HOW TO CHECK THE PARTSPUHZ-RP200YHA PUHZ-RP200YHA1 PUHZ-RP250YHA PUHZ-RP250YHA1

RP200/250YHA RP200/250YHA1

123

456

M

Blue

Brown

Yellow

Orange

Red

White

RP200/250YHA RP200/250YHA1

Normal Abnormal

Open or short1435±150"

Parts name Check points

Disconnect the connector then measure the resistance using a tester. (Surrounding temperature 10:~30:)

Disconnect the connector then measure the resistance using a tester. (Winding temperature 20:)

Thermistor (TH3, TH32)<Outdoor pipe>

Thermistor (TH4)<Discharge>

Thermistor (TH6)<Outdoor 2-phase pipe>

Thermistor (TH7)<Outdoor>

Normal

160k"~410k"

4.3k"~9.6k"

TH4

TH3, TH32

TH6

TH7

Abnormal

Open or short

Normal

Red - White Red - Orange Brown - Yellow Brown - Blue

Abnormal

46±4"

Measure the resistance between the terminals using a tester. (Surrounding temperature 20:)

Solenoid valve coil<Four-way valve> (21S4)

Pin number of relay connector is different from that motor connector

Motor for compressor(MC)

Linear expansion valve ( LEV(A) )

Normal Abnormal

Open or short

Open or short

Measure the resistance between the terminals using a tester.(Surrounding temperature 20:)

1197±10"

Solenoid valve coil<Bypass valve> (SV)

Measure the resistance between the terminals using a tester. (Winding temperature 20:)

Fan motor(MF1,MF2)

Normal

15.3±0.5"

1370±100"

0.72"

Measure the resistance between the terminals using a tester. (Winding temperature 20:)

Normal Abnormal

Open or short

Relay connector Abnormal

Open or short

Red — Black

Black — White

White — Red

Black W

V

U

W

V

U

White

Red

1435±150"

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12-7. HOW TO CHECK THE COMPONENTS<Thermistor feature chart>

Low temperature thermistors

• Thermistor <Outdoor pipe> (TH3, TH32)• Thermistor <Outdoor 2-phase pipe> (TH6)• Thermistor <Outdoor> (TH7)

Thermistor R0 = 15k' ± 3%B constant = 3480 ± 2%

Rt =15exp{3480( 273+t –

273 )}

0: 15k'10: 9.6k'20: 6.3k'25: 5.2k'

30: 4.3k'40: 3.0k'

1 1

Thermistor R120 = 7.465k' ± 2%B constant = 4057 ± 2%

Rt =7.465exp{4057( 273+t –

393)}1 1

20: 250k'30: 160k'40: 104k'50: 70k'60: 48k'

70: 34k'80: 24k'90: 17.5k'100: 13.0k'110: 9.8k'

High temperature thermistor

• Thermistor <Discharge> (TH4)

0

10

20

30

40

50

-20 -10 0 10 20 30 40 50Temperature (:)

Res

ista

nce

(K"

)

500

400

300

200

100

025 50 75 100 120

Temperature (:)

Res

ista

nce

(K"

)

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<Output pulse signal and the valve operation>

(2) Linear expansion valve operation

A

B

C

Open

Extra tightning (about 32 pulse)

Pulse number

500 pulseOpening a valveall the way

CloseVal

ve p

ositi

on (

capa

city

)

Opening a valve : 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 8Closing a valve : 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 1

The output pulse shifts in above order.❈ 1. When linear expansion valve operation stops, all output phase

become OFF.

❈ When the switch is turned on, 700 pulse closing valve signal willbe sent till it goes to A point in order to define the valve position.(The pulse signal is being sent for about 20 seconds.)

When the valve moves smoothly, there is no noise or vibrationoccurring from the linear expansion valve : however, when thepulse number moves from B to A or when the valve is locked,more noise can be heard than normal situation.No noise is heard when the pulse number moves from B to A in case coil is burn out or motor is locked by open-phase.

❈ Noise can be detected by placing the ear against the screw dri-ver handle while putting the screw driver to the linear expansionvalve.

LEV

M

16

[4 [4

[3

[2

[1

2

1Red

Brown

Blue

Orange

Yellow

White

3

4

5

6

Connector LEV-A

DC12V

Outdoor controller board

Drive circuit

[3

[2

[1

3

2

54

Linear expansion valve(1) Operation summary of the linear expansion valve.• Linear expansion valve open/close through stepping motor after receiving the pulse signal from the outdoor controller circuit board.• Valve position can be changed in proportion to the number of pulse signal.<Connection between the indoor controller circuit board and the linear expansion valve>

1

ON

OFF

OFF

OFF

ON

ON

OFF

OFF

OFF

ON

OFF

OFF

OFF

ON

ON

OFF

[1

Output(Phase)

Output

[2

[3

[4

2 3 4 5 6 7 8

OFF

OFF

ON

OFF

OFF

OFF

ON

ON

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

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Main body

Lead wire Stopper

Coil

A

Be sure to attach thestopper to pipe B.

B A

(3) How to attach and detach the coil of linear expansion valve <Composition>Linear expansion valve is separable into the main body and the coil as shown in the diagram below.

<How to detach the coil>

Hold the lower part of the main body (shown as A) firmly so thatthe main body does not move and detach the coil by pulling itupward.Be sure to detach the coil holding main body firmly. Otherwisepipes can bend due to pressure.

<How to attach the coil>

Hold the lower part of the main body (shown as A) firmly so thatthe main body does not move and attach the coil by inserting itdownward into the main body. Then securely attach the coil stop-per to pipe B. (At this time, be careful that stress is not added tolead wire and main body is not wound by lead wire.) If the stop-per is not firmly attached to pipe B, coil may be detached fromthe main body and that can cause defective operation of linearexpansion valve.To prevent piping stress, be sure to attach the coil holding themain body of linear expansion valve firmly. Otherwise pipe maybreak.

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12-8. EMERGENCY OPERATION (1) When the error codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor

unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency opera-tion switch (SWE) to ON and short-circuiting the connector (CN31) on outdoor controller circuit board.

(4) Releasing emergency operation 1Turn the main power supply off.2Set the emergency operation switch (SWE) on indoor controller circuit board to OFF.3Set the shorting pins of emergency operation connector (CN31) on outdoor controller

circuit board to OFF.4Set SW4-2 on outdoor controller circuit board as shown in the right.

wIf shorting pins are not set on emergency operation connector (CN31), the setting remains OFF.

(2) Check the following items and cautions for emergency operation 1Make sure that there is no abnormality in outdoor unit other than the above abnormalities. (Emergency operation will

not be available when error code other than the above are indicated.)2For emergency operation, it is necessary to set the emergency operation switch (SWE) on indoor controller circuit board.

Refer to the electrical wiring diagram of indoor unit for how to set the indoor unit.)3During emergency operation, the air-conditioner will continuously be operated by supplying power and stopping it: It can

not be turned on or off by remote control, and temperature control is not possible.4Do not perform emergency heating operation for an extended period of time: If the outdoor unit starts defrosting during

this period, cold air will blow out from the indoor unit.5Do not perform emergency cooling operation for more than 10 hours: Neglecting this could result in freezing the heat

exchanger in indoor unit.

(3) Emergency operation procedure 1Turn the main power supply off.2Turn on the emergency operation switch (SWE) on indoor controller circuit board.3Set the shorting pins of emergency operation connector (CN31) on outdoor controller circuit board to ON.4Use SW4-2 on outdoor controller circuit board to set the operation mode (cooling or heating). (SW4-1 is not used.)

5Turning the main power supply on will start the emergency operation.

SW4

1 2 Cooling

HeatingON ON

OFF

CN31 Shorting pins

SW4

1 2 Cooling

HeatingON

Inspected content

Open/short of pipe thermistor (TH3, TH32/TH6)

Indoor/outdoor unit communication error •Signal receiving error (Outdoor unit)

Indoor/outdoor unit communication error •Transmitting error (Indoor unit)

Communication error other than outdoor unit

Communication error between outdoor controller board and M-NET board (Serial communication error)

Error code

U4

E8

E9

E0 ~ E7

Ed

●When following abnormalities occur, emergency operation will be available.

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(5) Operation data during emergency operationDuring emergency operation, no communication is performed with the indoor unit, so the data items needed for operationare set to the following values:

Operation data

Intake temperature (TH1)

Indoor fluid pipe temperature (TH2)

Indoor 2-phase pipe temperature (TH5)

Set temperature

Outdoor fluid pipe temperature (TH3)

Outdoor discharge pipe temperature (TH4)

Outdoor 2-phase pipe temperature (TH6)

Outdoor air temperature (TH7)

Temperature difference code (intake temperature - set temperature) (∆Tj)

Discharge super heat (SHd)

Sub-cool (SC)

Operation mode

COOL

27:

5:

5:

25:

45:

80:

50:

35:

5

30deg

5deg

HEAT

20.5:

45:

50:

22:

5:

80:

5:

7:

5

30deg

5deg

(w1)

(w1)

(w1)

(w1)

(w2)

(w2)

Remarks

w1: If the thermistor temperature data is normal (not open/short), that data is loaded into the control as valid data.

If the unit enters emergency operation because TH values have become mismatched, setting the thermistors

to open/short corrects the settings.

w2: If one thermistor is set to open/short, the values for each will be different.

[Example] When liquid temperature thermistor (TH3) has an open or short circuit.

COOL

45:

Ta

Tc

5:

5:

HEAT

5:

Tb

Td

50:

45:

Thermistor

TH3

TH6

TH4

TH5

TH2

Regard normal firure as effective data.

Regard normal firure as effective data.

Discharge superheat (SHd) Cooling = TH4 - TH6 = Tc - Ta Heating = TH4 - TH5 = Td - 50

Degree of subcooling (SC) Cooling = TH6- TH3 = Ta -45 Heating = TH5- TH2 = 50 - 45 = 5 deg.

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12-9. TEST POINT DIAGRAMOutdoor controller circuit boardPUHZ-RP200YHA PUHZ-RP200YHA1


Communicationpower supply D71 Voltage developed across:16-30V DC

–

+

CNS(Indoor/outdoor unit connecting wire)

CNAC2 to 4: Power supply foroutdoor controller circuit board(220V-240V AC)1 to 3: Power supply forindoor/outdoor unit con-nection wire (220V-240V AC)

CN2Connect to the outdoorpower circuit board (CN2)1-5:Power circuit board ➔Transmitting signal to the controller circuit board(0-5V DC)2-5: Zero cross signal

(0-5V DC)3-4: Not used6-5: 15V DC7-5: 15V DC[5: – 1,2,6,7: + ]

21S4Four-way valve

63HHigh pressure switch

63LLow pressure switch

SV2Replace valve

CN4Transmission to outdoorpower circuitboard (CN4)

LED1, LED2Operating inspectionindicators

SW10Model setup

CN31Emergencyoperation

SW4Test operation

SW6Model setup

SW8Model setupReplacement operation

SW5Function switch

SWPPump down

SW1Forced defrost, detect history record reset, refrigerant address

CNMNTConnected to outdoor M-NET board

CNMA-control serviceinspection kit

CNVMNTConnected to outdoor M-NET board

CNDM1 to 2: Input of silent mode1 to 3: Input of external

contact point

LEV-ALinear expansionvalve

TH4Thermistor<Discharge>

TH3Thermistor<Outdoor pipe>

TH7Thermistor<Outdoor>

TH6Thermistor <Outdoor 2-phase pipe>

CN331Control signal for outdoor FANcontroller circuit board (CN6)

CNDC310V~340V DCConnect fromoutdoor noise fil-ter circuit board(CNDC)

–

+ }

CN332Power supply for outdoorFAN controller circuitboard (CN2)1—2 : 18VDC[2: – 1: + ]

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282V DC

282V DC

Brief Check of POWER MODULEW Usually, they are in a state of being short-circuited if they are broken.Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.1. Check of POWER MODULE1.Check of DIODE circuitL1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N12.Check of IGBT circuitP2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W

Outdoor Power circuit boardPUHZ-RP200YHAPUHZ-RP250YHAPUHZ-RP200YHA1

PUHZ-RP250YHA1

CN5Detection of primary current(Connect to the outdoor noise filter circuit board (CN5))

CN4Connect to the outdoor controller circuit board(CN4)

CN2Connect to the outdoor controller circuit board (CN2)1-5: Power circuit board ➔ Transmitting

signal to the controller board (0-5V DC)2-5: Zero cross signal (0-5V DC)3-4: Not used6-5: 15V DC7-5: 15V DC

[ 5 : – 1, 2, 6, 7 : + ]

TB-U, TB-V, TB-WConnect to the compressor (MC)Voltage among phases: 10V-400V AC

TB-L1, TB-L2, TB-L3Connect to the outdoor noise filter circuit board(LO1, LO2, LO3)380V-415V AC

Note:The marks, L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W shown in the diagram above are not actually printed on the board.

W

N2N1P2

P1 L1

L2

L3

W

W

TAB connecteron X52AConnect to theRS resistor

TB-P1Connect to theDCL

}–+ }} 565V DC

POWER MODULE

TB-C1Connect to thesmoothing capacitorCB1 – , CB2 +

TB-P2Connect to the DCLand the smoothing capacitorCB1 +

CN1

Connect to the outdoor FAN controller circuit board (CN5)

TB-N1Connect to thesmoothing capacitorCB2 –

+

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55

Outdoor Noise filter circuit boardPUHZ-RP200YHAPUHZ-RP250YHAPUHZ-RP200YHA1

PUHZ-RP250YHA1LI1, LI2, LI3, NIPOWER SUPPLYLI1-LI2/LI-LI3/LI3-LI1 : AC380/400/415V inputLI1-NI/LI2-NI/LI3-NI : AC220/230/240V input(Connect to the terminal block (TB1))

GD1Connect to the earth

CNAC1, CNAC2AC220/230/240V(Connect to the out-door controller circuitboard (CNAC))

CNDC(Connect to the out-door controller circuitboard (CNDC))

LO1, LO2, LO3POWER SUPPLYLO1-LO2/LO2-LO3/LO3-LO1 : AC380/400/415V OUTPUT(Connect to the outdoor power circuit board (TB-L1, L2, L3))

CNCTPrimary current(Connect to the out-door power circuitboard (CN5))

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56

Outdoor Fan controller circuit boardPUHZ-RP200YHAPUHZ-RP250YHAPUHZ-RP200YHA1

PUHZ-RP250YHA1

Brief Check of IGBTW Usually, they are in a state of being short-circuited if they are broken.Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.Check of POWER MODULE

Check of IGBT circuitP - U , P - V , P - W , N - U , N - V , N - W

Note:The marks, U , V and W shown in the diagram above are not actually printed on the board.

1 21 2

5 3 1

N

U

W

TAB-U, TAB-V, TAB-W

Connect to the Fan motor (MF)Voltage among phases : 20V-380V AC

CN6Control signal from outdoor controllercircuit board (CN331)

CN2Power supply from outdoor controllercircuit board (CN332)

++-

}}

282V DC

282V DC} 565V DC

Connect to the outdoor Power circuit board (CN1)

CN5

P

(RED) (WHITE)(BLACK)

V

1-2: 18V DC[2: - , 1: + ]

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57

SwitchType

ofswitch

Dipswitch

SW1

1

2

No. Function Effective timingAction by the switch operation

Compulsory defrosting Start NormalWhen compressor is working in heating operation. w

Abnormal history clear

Refrigerant address setting When power supply ON

Clear Normal off or operating

SW41

6

5

4

3

2

Test run Operating OFFUnder suspension

Test run mode setting Heating Cooling

ON OFF

1 2 30 1 2 3

4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 34 5 6 7

4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 38 9 10 11

4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 312 13 14 15

4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

1 2 3 4 5 6

ON

Compulsory defrosting should be done as follows.1Change the DIP SW1-1 on the outdoor controller circuit board from OFF to ON.2Compulsory defrosting will start by the above operation 1 if these conditions written below are satisfied.

• Heat mode setting• 10 minutes have passed since compressor started operating or previous compulsory defrosting finished.• Pipe temperature is less than or equal to 8:.

3Compulsory defrosting will finish if certain conditions are satisfied.wCompulsory defrosting can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.

After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This depends on the service conditions.

12-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS (1) Function of switches

w1 Power failure automatic recovery’ can be set by either remote controller or this DIP SW. If one of them is set to ON, ‘Auto recovery’ activates. Please set “Auto recovery” basically by remote controller because all units have not DIP SW.Please refer to 12. FUNCTION SETTING.

w2 Refer to the page for the wiring.w3 RP250YHA is always ON.

1

2

3

4

3

4

5

6

1

2

3

1

2

ON OFFNo. Function Effective timing

Action by the switch operation

No function

Power failureautomatic recovery w1

No function

No function

No function

No function

No function

No function

Use of existing pipe

Replacement operation

No function

Fan speed setting

No function

Pump down

Switch

SW5

SW7-1SW7-2 Power consumption when external input

OFF

OFF

ON

0% (STOP)

50%

70%

OFF

ON

OFFSW7Dip

switch

Pushswitch

SW8

SW9

SWP

Type ofSwitch

—

Auto recovery

—

—

—

—

—

—

Used or RP250Yw3

Start

—

High external static pressure

—

Start

—

No auto recovery

—

—

—

—

—

—

Not used

Normal

—

Normal

—

Normal

—

When power supply ON

—

—

Always

—

—

—

—

AlwaysAlways

—

Always

—

Under suspension

Switch to

"Demand function"w2

1

2

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(2) Function of connectors

CN31

Types Connector Function Effective timing

Connector

SW6

SW8

SW10

SW6-1

SW6-2

SW6-3

SW6-4

SW6-5

SW6-6

SW8-1

SW10-1

SW10-2

Start

Short Open

Action by the switch operation

Model select

Emergency operation When power supply ONNormal

W 1

W 1

W 1 As for SW8, see also 12-10 (1) Function of switches, as SW8 sets the replacement operation as well.

Special function(a) Low-level sound priority mode (Local wiring)

Unit enters into Low-level sound priority mode by external signal input setting.Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual. Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional contactor for Demandinput located on the outdoor controller board enables to control compressor operation frequency.W The performance is depends on the load of conditioned outdoor temperature.

How to wiring

1) Make the circuit as shown above with Adaptor for external signal input(PAC-SC36NA).2) Turn SW1 to on for Low-level sound priority mode.

Turn SW1 to off to release Low-level sound priority mode and normal operation.

(b) On demand control (Local wiring)Demand control is available by external input. In this mode, power consumption is decreased within the range of usual0~100%.

How to wiringBasically, the wiring is the same (a).Connect an SW 1 which is procured at field to the between Orange and Red(1 and 3) of the Adaptor for external signal input(PAC-SC36NA), and insulate the tip of the brown lead wire.

It is possible to set it to the following power consumption (compared with ratings) by setting the SW7-1, 2.

CNDMXSW1~

X

Max. 10 m including local wiringSW1 : Switch X : Relay (Contact spec. : DC1mA)

Relay supply

RedBrown

Orange

3

2

1

Purchased at local

Adaptor for external signal input(PAC-SC36NA)

Outdoor unit controller board

3

2

1

Insulate this point securely as this is not used.

<Low-level sound priority mode circuit>

SW7-1 SW7-2

OFF 0% (Operation stop)

75%

50%

OFF

ON

OFF

OFF

ON

Power consumption (SW1 on)

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<Display function of inspection for outdoor unit>The blinking patterns of both LED1(green) and LED2(red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part ‘A-Control Service Tool (PAC-SK52ST)’ to connectorCNM on outdoor controller circuit board.

F3F5F9—

—

—

E6

E7

—

—

E0

E3

E4

E5

EF

Ed

A0~A8

[Display] (1)Normal condition

(2)Abnormal condition

Unit conditionOutdoor controller circuit board A-Control Service Tool

LED1 (Green) LED2 (Red) Error code

When the power is turned onWhen unit stopsWhen compressor is warming upWhen unit operates

Lighted LightedLightedLightedLighted

Not lighted

Indication of the display

Alternately blinking displayOperation mode

Not lightedLighted

00, etc.08, etc.

C5, H7 etc.

Indication ErrorErrorcodew1

Outdoor controller circuit boardContents Inspection method

LED1 (Green) LED2 (Red)

1 blinking 2 blinking


2 blinking

3 blinking

4 blinking

5 blinking

Connector(63L) is open.Connector(63H) is open.2 connectors are open.

Startup time over

Error code is not defined.

Mis-wiring of indoor/outdoor unit conne-cting wire, excessive number of indoor units (5 units or more)Mis-wiring of indoor/outdoor unit co-nnecting wire (converse wiring or di-sconnection)

Indoor/outdoor unit communication error(signal receiving error) is detected by in-door unit.Indoor/outdoor unit communication error(transmitting error) is detected by indoorunit.Indoor/outdoor unit communication error(signal receiving error) is detected by outdoor unit.Indoor/outdoor unit communication error (transmitting error) is detected by outdoorunit.

Remote controller signal receiving error is detected by remote controller.

Remote controller transmitting error is detected by remote controller.

Remote controller signal receiving error is detected by indoor unit.

Remote controller transmitting error is detected by indoor unit.

Serial communication error<Communication between outdoor controller board and outdoor power board><Communication between outdoor controller board and M-NET p.c. board>Communication error of high prior signal(M-NET)

W1.Remote controller displays error code.W2.Refer to service manual for indoor unit.

1Check if indoor/outdoor connecting wire is connected correctly.2Check if 5 or more indoor units are connected to outdoor unit.3Check if noise entered into indoor/outdoor connecting wire or power supply.4Re-check error by turning off power, and on again.

1Check if connector (63L or 63H) on the outdoor controller board is not disconnected. 2Check continuity of pressure switch (63L or 63H) by tester.

1Check if connector (CN4) on outdoor controller circuit board and outdoor power circuit board is not disconnected.2Check if there is poor connection of connector on outdoor controller circuit board(CNMNT and CNVMNT).3Check M-NET communication signal.

1Check if remote controller is MA remote controller(PAR-21MAA).2Check if noise entered into transmission wire of remote controller.3Check if noise entered into indoor/outdoor connecting wire.4Re-check error by turning off power, and on again.

1Check if connecting wire of indoor unit or remote controller is connected correctly.2Check if noise entered into transmission wire of remote controller.3Re-check error by turning off power, and on again.

1Check if indoor/outdoor connecting wire is connected correctly.2Check if noise entered into indoor/outdoor connecting wire or power supply.3Check if noise entered into indoor/outdoor controller circuit board.4Re-check error by turning off power, and on again.

P.28P.28P.28P.29(EA)P.29(Eb)P.29(EC)w2

w2

P.33(E8)P.33(E9)w2

w2

w2

w2

P.33

P.33

P.34~P.37

Detailedreference

page

OC338B-2.qxp 06.7.11 10:54 AM

60

LED indications of fan operating condition (LED1 on outdoor Fan controller circuit board)

Operation LED1 (Red)

LightedNormal (Stop)

Normal (Operating)Fan stops.Controller board is outputting waveform for fan driving.

Contents

Operation LED1 (Red) Importance2 blinks 1

26 blinksAbnormalis detected

Abnormality of bus voltage: Abnormal if voltage is less than 200V or more than 760V.Abnormality of overcurrent: Abnormal if current value of DC bus in over the cut-off point.

Meaning of error code and detection method Remark

This LED is not used for service.

U2

U1

UF

UP

UH

U6

U3

U4

U5

U9

P1

P2

P9

P4

P5

P6

P8

Indication ErrorErrorcodew1

Outdoor controller circuit boardContents Inspection method

LED1 (Green) LED2 (Red)


2 blinking

W1 Error code displayed on remote controllerW2 Refer to service manual for indoor unit.

4 blinking

5 blinking

6 blinking

7 blinking

1 blinking

2 blinking

3 blinking

4 blinking

4 blinking

Abnormality of shell thermostatand discharging temperature (TH4)

1Check if stop valves are open.2Check if connectors (TH4, LEV-A) on outdoor controller circuit board are not disconnected.3Check if unit fills with specified amount of refrigerant.4Measure resistance values among terminals on indoor valve and outdoor linear expansion valve using a tester.

Abnormal high pressure (High pressure switch 63H worked.)

1Check if indoor/outdoor units have a short cycle on their air ducts.2Check if connector (63H) on outdoor controller circuit board is not disconnected.3Check if heat exchanger and filter is not dirty.4Measure resistance values among terminals on linear expansion valve using a tester.

1Check if stop valves are open.2Check looseness, disconnection, and converse connection of compressor wiring.3Measure resistance values among terminals on compressor using a tester.4Check if outdoor unit has a short cycle on its air duct.

Compressor over current breaking (Start-up locked)Compressor over current breakingAbnormality of current sensor (P.B.)Abnormality of power module

Open/short of discharge thermistor (TH4)

Open/short of outdoor thermistors(TH3, TH32, TH6, TH7 and TH8)

1Check if connectors (TH3, TH32, TH4, TH6 and TH7) on outdoor controller circuit board and connector (CN3) on outdoor power circuit board are not disconnected.2Measure resistance value of outdoor thermistors.

Abnormality of heat sink temperature

1Check if indoor/outdoor units have a short cycle on their air ducts.2Measure resistance value of outdoor thermistor(TH8).

Abnormality of voltage 1Check looseness, disconnection, and converse connection of compressor wiring.2Measure resistance value among terminals on compressor using a tester.3Check if power supply voltage decreases.4Check CN5 wiring on the outdoor power circuit board or noise filter circuit board.

Abnormality of room temperature thermistor (TH1)Abnormality of pipe temperature thermistor /Liquid (TH2)Abnormality of pipe temperature thermistor/Condenser-Evaporator

1Check if connectors (CN20, CN21 and CN29) on indoor controller circuit board are not disconnected.2Measure resistance value of indoor thermistors.

Abnormality of drain sensor (DS)Indoor drain overflow protection

1Check if connector (CN31) on indoor controller circuit board is not disconnected.2Measure resistance value of indoor thermistors.3Measure resistance value among terminals on drain-up machine using a tester.4Check if drain-up machine works.5Check drain function.

Freezing (cooling)/overheating (heating) protection

1Check if indoor unit has a short cycle on its air duct.2Check if heat exchanger and filter is not dirty.3Measure resistance value on indoor and outdoor fan motors.4Check if the inside of refrigerant piping is not clogged.

Abnormality of pipe temperature

1Check if indoor thermistors (TH2 and TH5) are not disconnected from holder.2Check if stop valve is open.3Check converse connection of extension pipe. (on plural units connection)4Check if indoor/outdoor connecting wire is connected correctly. (on plural units connection)

P.30

P.30

P.32

P.32

P.32

P.31

P.31

P.31

P.31

P.32

W2

W2

W2

W2

W2

W2

Detailedreference

page

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61

<Outdoor unit operation monitor function>[When option part ‘A-Control Service Tool(PAC-SK52ST)’ is connected to outdoor controller circuit board(CNM)]Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by control-ling DIP SW2 on ‘A-Control Service Tool’.

SW2 setting

1

ON

2 3 4 5 6

Display detail Explanation for display Unit

Operation indicator SW2 : Indicator change of self diagnosis

<Digital indicator LED1 working details>(Be sure the 1 to 6 in the SW2 are set to OFF.)

(1) Display when the power supply ON.When the power supply ON, blinking displays by turns.Wait for 4 minutes at the longest.

(2) When the display lights. (Normal operation)1Operation mode display.

1

ON

2 3 4 5 6

(Initial setting)

SW2

1 secondinterval

LED1(Lighting)

Display Operation ModelThe tens digit : Operation mode The ones digit : Relay output

O

C

H

d

Display

0

1

2

3

4

5

6

7

8

A

CompressorWarming-upCompressor 4-way valve Solenoid valve

—

—

—

—

ON

ON

ON

ON

—

—

—

—

—

—

—

—

—

—

ON

ON

—

—

ON

ON

—

—

ON

ON

—

ON

—

ON

—

ON

—

ON

—

ON

—

—

OFF / FAN

COOLING / DRY w

HEATING

DEFROSTING

2Display during error postponementPostponement code is displayed when compressor stops due to the work of protection device.Postponement code is displayed while error is being postponed.

(3) When the display blinksInspection code is displayed when compressor stops due to the work of protection devices.

Display Contents to be inspected (When power is turned on)F3F5F9E8E9EAEbEc

E0~E7

63L connector(red) is open.63H connector(yellow) is open.2 connectors (63H/63L) are open.Indoor/outdoor communication error (Signal receiving error) (Outdoor unit)Indoor/outdoor communication error (Transmitting error) (Outdoor unit)Mis-wiring of indoor/outdoor unit connecting wire, excessive number of indoor units (5 units or more)Mis-wiring of indoor/outdoor unit connecting wire(converse wiring or disconnection)Startup time overCommunication error except for outdoor unit

Display Inspection unit01234

Outdoor unitIndoor unit 1Indoor unit 2Indoor unit 3Indoor unit 4

Display Contents to be inspected (During operation)U1U2U3U4

U5

U6U7UFUHULUP

P1~P8A0~A7

Abnormal high pressure (63H worked)Abnormal high discharging temperature, shortage of refrigerantOpen/short circuit of discharging thermistor(TH4)Open/short of outdoor unit thermistors(TH3, TH32, TH6, TH7 and TH8)Abnormal temperature of heat sinkCompressor overcurrent interruption (When Comp. locked)Abnormality of power moduleAbnormality of super heat due to low discharge temperatureCompressor overcurrent interruption (When Comp. locked)Current sensor errorAbnormal low pressure (63L worked)Compressor overcurrent interruptionAbnormality of indoor unitsCommunication error of high-prior signal (M-NET)

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62

SW2 setting

1

ON

2 3 4 5 6


Pipe temperature / Liquid(TH3)– 40~90

– 40~90(When the coil thermistor detects 0: or below, “–” and temperature are displayed by turns.)

(Example) When –10:; 0.5 secs. 0.5 secs. 2 secs.

:

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Discharge temperature (TH4)3~217

Output step of outdoor FAN0~10

The number of ON / OFF times ofcompressor0~9999

Compressor integrating operation times0~9999

3~217(When the discharge thermistor detects 100: or more, hundreds digit, tens digit and ones digit are displayed by turns.)

(Example) When 105:; 0.5 secs. 0.5 secs. 2 secs.

:

Step

100 times

10 hours

0~10

0~9999(When the number of times is 100 or more,hundreds digit, tens digit and ones digit are displayed by turns.)

(Example) When 42500 times (425 ✕100 times);0.5 secs. 0.5 secs. 2 secs.

0~9999(When it is 100 hours or more, hundreds digit, tens digit and ones digit are displayed by turns.)

(Example) When 2450 hours (245 ✕10 hours);0.5 secs. 0.5 secs. 2 secs.

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Compressor operating current.0~50

LEV-A opening pulse0~480

0~50wOmit the figures after the decimal fractions.

0~480(When it is 100 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.

(Example) When 150 pulse; 0.5 secs. 0.5 secs. 2 secs.

A

Pulse

Error postponement code history (1)of outdoor unit

Postponement code displayBlinking: During postponementLighting: Cancellation of postponement“00” is displayed in case of no postponement.

Codedisplay

Codedisplay

Operation mode on error occurring Operation mode of when operation stops due toerror is displayed by setting SW2 like below.

1

ON

2 3 4 5 6

(SW2)

10

1

ON

2 3 4 5 6

Compressor operating frequency0~225

0~255(When it is 100Hz or more, hundreds digit, tens digit and ones digit are displayed by turns.

(Example) When 125Hz; 0.5 secs. 0.5 secs. 2 secs.

Hz

1 05

4 25

2 45

1 25

1 50

1

ON

2 3 4 5 6

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63

SW2 setting

1

ON

2 3 4 5 6


Pipe temperature / Liquid(TH3) on erroroccurring– 40~90

– 40~90(When the coil thermistor detects 0: or below, “–” and temperature are displayed by turns.)

(Example) When –15:; 0.5 secs. 0.5 secs. 2 secs.

:

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Compressor temperature (TH4) or discharge temperature (TH4) on erroroccurring3~217

Compressor operating current on erroroccurring0~20

Error code history (1) (latest)Alternate display of abnormal unitnumber and code

Error code history (2) Alternate display of error unit numberand code

3~217(When the temperature is 100: or more, the hundreds digit, tens digit and ones digit are displayed by turns.)

(Example) When 130:; 0.5 secs. 0.5 secs. 2 secs.

:

A

Codedisplay

Codedisplay

0~20

When no error history, “ 0 ” and “–” are displayed by turns.

When no error history, “ 0 ” and “–” are displayed by turns.

1

ON

2 3 4 5 6

Thermostat ON time0~999

Test run elapsed time0~120

0~999(When it is 100 minutes or more, the hundreds digit,tens digit and ones digit are displayed by turns.)

(Example) When 245 minutes; 0.5 secs. 0.5 secs. 2 secs.

0~120(When it is 100 minutes or more, the hundreds digit,tens digit and ones digit are displayed by turns.)


Minute

Minute

15

1 30

2 45

1 05

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64

SW2 setting

1

ON

2 3 4 5 6


Capacity setting display Displayed as an outdoor capacity code.

Codedisplay

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Outdoor unit setting information

Indoor pipe temperature / Liquid(TH2(1))Indoor 1– 39~88

Codedisplay

:

– 39~88(When the temperature is 0: or less, “–” andtemperature are displayed by turns.)

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Indoor room temperature (TH1)8~39

Capacity

RP200YRP250Y

4050

Code

Setting details

• The tens digit (Total display for applied setting)

• The ones digit

H·P / Cooling only

Single phase / Three phase

Display details

0 : H·P 1 : Cooling only

0 : Single phase 2 : Three phase

Setting details

Defrosting switch

Display details

0 : Normal 1 : For high humidity

(Example) When heat pump,three phase and defrosting (normal) are set up, “20” is displayed.

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Indoor pipe temperature / Cond. / Eva.(TH5(1))Indoor 1– 39~88


:



:

:

:

8~39


Indoor pipe temperature / Cond. / Eva.(TH5(2))Indoor 2– 39~88

1

ON

2 3 4 5 6

The number of connected indoor units

Unit

0~4(The number of connected indoor units are dis-played.)

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65

1

ON

2 3 4 5 6

°C

Discharge super heat. SHd0~255

Cooling = TH4-TH6Heating = TH4-TH5

0~255(When the temperature is 100°C or more, hundredsdigit, tens digit and ones digit are displayed byturns.)

°C

Sub cool. SC0~130


0~130(When the temperature is 100°C or more, hundredsdigit, tens digit and ones digit are displayed by turns.)

0.1 A

Input current of outdoor unit 0~500(When it is 100 or more, hundreds digit, tens digitand ones digit are displayed by turns.)

Hz

Targeted operation frequency0~255

0~255(When it is 100Hz or more, hundreds digit, tens digit and ones digit are displayed by turns.)

DC bus voltage360~760

360~760(When it is 100V or more, hundreds digit, tens digit and ones digit are displayed by turns.)

V

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

SW2 setting

1

ON

2 3 4 5 6


:

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Indoor setting temperature17~30

Outdoor pipe temperature / Cond./Eva. (TH6)– 39~88

Outdoor internal heat sink tempera-ture (TH8)– 40~200

17~30

:

:

:

– 39~88(When the temperature is 0: or less, “–” and temperature are displayed by turns.)


(When the thermistor detects 100: or more, hundreds digit, tens digit and ones digit are displayed by turns.)

Outdoor outside temperature (TH7)– 39~88


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66

SW2 setting Display detail Explanation for display Unit

1

ON

2 3 4 5 6

%

Capacity save0~255When air conditioner is connected to M-NET and capacity save mode isdemanded, “0”~”100” is displayed.

When there is no setting of capacity save “100” is displayed.

0~100(When the capacity is 100% hundreds digit, tens digitand ones digit are displayed by turns.)(Example)When 100%; 0.5 secs. 0.5 secs. 2 secs.

Code display



Code display



Code display

Error code history (3) (Oldest)Alternate display of abnormal unit num-ber and code.

When no error history, “0” and “–“ are displayed byturns.

Error thermistor display

When there is no error thermistor, “–“ is displayed.

3: Outdoor pipe temperature /Liquid (TH3, TH32)6: Outdoor pipe temperature /Cond./Eva. (TH6)7: Outdoor outside temperature (TH7)8: Outdoor heat sink (TH8)

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

Code display

Operation frequency on error occurring0~255

0~255(When it is 100Hz or more, hundreds digit, tens digitand ones digit are displayed by turns.)(Example)When 125Hz; 0.5 secs. 0.5 secs. 2 secs.

1

ON

2 3 4 5 6Hz

Fan step on error occurring0~10

0~10

1

ON

2 3 4 5 6Step

001

251

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1

ON

2 3 4 5 6

Pulse

LEV-A opening pulse on error occurring0~480

0~480(When it is 100 pulse or more, hundreds digit, tensdigit and ones digit are displayed by turns.)

(Example) When 130 pulse; 0.5 secs. 0.5 secs. 2 secs.

:

Indoor room temperature (TH1) on erroroccurring8~39

8~39

:

Indoor pipe temperature / Liquid (TH2)on error occurring– 39~88

– 39~88(When the temperature is 0°C or less, “–” and temperature are displayed by turns.)

(Example) When -15°C; 0.5 secs. 0.5 secs. 2 secs.

Indoor pipe temperature / Cond./ Eva.(TH5) on error occurring– 39~88


(Example) When –15°C; 0.5 secs. 0.5 secs. 2 secs.

Outdoor pipe temperature / Cond./ Eva.(TH6) on error occurring– 39~88



Outdoor outside temperature (TH7) onerror occurring– 39~88



Outdoor heat sink temperature (TH8) onerror occurring– 40~200


(When the temperature is 100°C or more, hundredsdigit, tens digit and ones digit are displayed byturns.)

301

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

15

15

15

15

:

:

:

:

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:

0~255(When the temperature is 100°C or more, hundredsdigit, tens digit and ones digit are displayed by turns.)

(Example) When 150°C; 0.5 secs. 0.5 secs. 2 secs.

Sub cool on error occurring. SC0~130


0~130(When the temperature is 100°C or more, hundredsdigit, tens digit and ones digit are displayed byturns.)

(Example) When 115°C; 0.5 secs. 0.5 secs. 2 secs.

Thermostat-on time until error stops0~999

0~999(When it is 100 minutes or more, hundreds digit, tensdigit and ones digit are displayed by turns.)


Indoor pipe temperature / Liquid(TH2 (3))Indoor 3– 39~88


Indoor pipe temperature / Cond./ Eva.(TH5 (3))Indoor 3– 39~88


When there is no indoor unit, “00” is displayed.

501

:

1

ON

2 3 4 5 6

Discharge super heat on error occurringSHd0~255


1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

1

ON

2 3 4 5 6

:

Minute

:

151

154

Suspensive U9 error detail (1) Display timing1 During the error suspensive period, the latest

suspensive error is displayed according to thetable below.

2 When U9 error is determined, the latest errorstatus is displayed according to the table below, and the display is cleared (=00) by the error clearing condition.

(2) Error display

–

1

ON

2 3 4 5 6

DisplayDescriptionNormalOvervoltage errorUndervoltage errorL1 phase open errorAbnormal power synchronous signal

0001020408

W Display examples for multiple errors:Overvoltage (01) + Undervoltage (02) =03Undervoltage (02) + Power-sync signal error (08) = 0A

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SW2 setting Display detail Explanation for display UnitControlling status of compressor operating frequency

1

ON

2 3 4 5 6

Codedisplay

The following code will be a help to know theoperating status of unit.

Display Compressor operating frequency control

Display Compressor operating frequency control

Primary current controlSecondary current control

12

1

4

8

2

•The tens digit

•The ones digit (In this digit, the total number of activated control is displayed.)

Preventive control for excessive temp-erature rise of discharge temperaturePreventive control for excessive temp-erature rise of condensing temperatureFrosting preventing controlPreventive control for excessive temp-erature rise of radiator panel

(Example)The following controls are activated.• Primary current control• Preventive control for excessive temperature rise of condensing temperature• Preventive control for excessive temperature rise of radiator panel

1a

LED

:



101

ON

2 3 4 5 6

Liquid pipe temperature (TH32)– 40~90

– 39~88(When the temperature is 0°C or less, “–” and temperature are displayed by turns.) :

1

ON

2 3 4 5 6


– 39~88(When the temperature is 0°C or less, “–” and temperature are displayed by turns.) :

1

ON

2 3 4 5 6

Indoor pipe temperature / (Cond./Eva.)(TH5(4))Indoor 4– 39~88

Indication for performing status of unitreplacement operation•The ones digit

Every time the unit replacement oper-ation is performed by using SW8-2 for2 hours, the number "1" is displayed.However, the operation less than 2 hours is not counted, and the number "0" is displayed.

•The tens digitWhen specified time of unit replace-ment operation has been performed by using outdoor unit, the number "1" is displayed. (The number gets back to "0" when performing replacement operation by using SW8-2.)

1

ON

2 3 4 5 6

•The ones digit1: Performed0: Not performed

•The tens digit1: Specified time of replacement operation

completed0: Now performing replacement operation

—

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13 FUNCTION SETTING

Function Settings No.Mode

No.Setting

Initial setting (Factory setting)- : Not available

4-Waycassette

Ceilingconcealed

Ceiling suspended Wallmounted

Ceilingconcealed

PLA-AA(2)PEAD-EA(2)

PCA-GA(2) PCA-HAPKA-GAL

PEH-MYAPEAD-GA PKA-FAL(2)

Filter sign 100Hr 12500Hr 07 2No filter sign indicator 3

Air flow Quiet Standard 1 - - --(Fan speed) Standard High ceiling1 08 2 - - --

High ceiling High ceiling2 3 - - --No.of air outlets 4 directions 1 - - - --

3 directions 09 2 - - - --2 directions 3 - - - --

Optional high efficiency Not supported10

1 - - --filter Supported 2 - - --Vane setting No vanes (Vane No.3 setting : PLA-AA only) 1 - - --

Vane No.1 setting 11 2 - - --Vane No.2 setting 3 - - --

Energy saving air Disabled 121 - - --

flow (Heating mode) Enabled 2 - - --Optional humidifier Not supported 13

1 - - - --(PLA-AA only) Supported 2 - - - --Vane differential setting No.1 setting (TH5: 24-28:) 1 - --in heating mode No.2 setting (Standard, TH5:28-32:) 14 2 - --(cold wind prevention) No.3 setting (TH5: 32-38:) 3 - --Swing Not available 23

1 - --Available 2 - --

Set temperature in heating Available 241

mode (4 deg up) Not available 2Fan speed when the Extra low 1heating thermostat is OFF Stop 25 2

Set fan speed 3Quiet operation mode Disabled (Standard)

261 - - - --

---

of PLA-AA(Fan speed) Enabled (Quiet operation mode) 2 - - - --Fan speed when the Set fan speed

271

cooling thermostat is OFF Stop 2Detection of abnormality of Available 28

1the pipe temperature (P8) Not available 2

} PLA-AA

Function Settings Mode No. Setting No. Initial setting

(when sent from the factory) Remarks

Power failure automatic recoveryIndoor temperature detecting

LOSSNAY connectivity

Power supply voltageAuto operating modeFrost prevention temperatureHumidifier control

Change of defrosting control

OFFONOperating indoor units (The average is considered as indoor temperature.)Indoor unit with remote controllerRemote controller's internal sensorNot supportedSupported (indoor unit not equipped with outdoor air intake)Supported (indoor unit equipped with outdoor air intake)240V220V,230VAuto energy-saving operation ONAuto energy-saving operation OFF2: (Normal)3:When the compressor operates, the humidifier also operates.When the fan operates, the humidifier also operates.StandardFor high humidity

12

1

231231212121212

01

02

03

04

05

15

16

17

The setting is applied to all the units in the same refrigerant system.

w1

13-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLEREach function can be set according to necessity using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1.

(1) Functions available when setting the unit number to 00 (Select 00 referring to 4 setting the indoor unit number.)W1 The functions below are available only when the wired remote controller is used.The functions are not available for floor

standing models.<Table 1> Function selections

(2) Functions available when setting the unit number to 01-03 or AL (07 in case of wireless remote controller)• When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to 4 setting the

indoor unit number.• When setting functions for a simultaneous- Twin Triple indoor unit system, set the unit number to 01 to 03 for each indoor

unit in case of selecting different functions for each unit referring to 4 setting the indoor unit number.• When setting the same functions for an entire simultaneous Twin Triple-indoor unit system, set refrigerant address to AL

(07 in case of wireless remote controller) referring to 4 setting the indoor unit number.

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6 Select mode No. 02 (room temperature detection position).7 Select setting No. 03 (remote controller fixed). (Use F and G .)

8 Enter the setting. (Press E .)

Finished

0 Endinf function display (Press A and B at the same time.)

Example:Selecting room temperaturedetection position

YES

YES

NO

NO

9

Selecting functions using the wired remote controller

1 Check the function selection setting.

For modes 15 and higher,press J and B at the same time.

3 Specify refrigerant address 00 (outdoor unit)4 Specify unit No. 00. (indoor unit) (Use C and D .)

5 Enter the setting. (Press E .)

(Specified indoor unit:BLOW operation)

Change refrigerantaddress unit No.

2 Switch to function setting mode. (Press A and B at the same time with the remote controller stopped.)

13-1-1. Selecting functions using the wired remote controllerFirst, try to familiarize yourself with the flow of the function selection procedure. In this section, an example of setting the roomtemperature detection position is given.For actual operations, refer to steps 1 to 0 .

Setting number Refrigerant address Unit number

Mode number

F

E

G

C D

J

B

A

I

Modes 01 to 14 can be activatedby pressing buttons A and Bsimultaneously, and modes 15 to28 by pressing buttons B and J .

The above procedure must be carried out only if changes are necessary.

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[Operating Procedure]1 Check the setting items provided by function selection.

If settings for a mode are changed by function selection, the functions of that mode will be changed accordingly. Check all the current settings according to steps 2to 7 , fill in the "Check" column in Table 1, and then change them as necessary. For factory settings, refer to the indoor unit's installation manual.

2 Switch off the remote controller.A Hold down the ( mode is 15 to 28)and B

buttons simultaneously for atleast two seconds. will start to flash,

and then the remote controller's display content will change as shown below.

FILTER

3 Set the outdoor unit's refrigerant address.C Press the [ CLOCK] buttons ( and ) to select the desired

refrigerant address. The refrigerant address changes from "00" to "15". (This operation is not possible for single refrigerant systems.)

* If the unit stops after FUNCTIONSELECTION flashed for two seconds or "88" flashes in the room temperature display area for two seconds, a transmission error may have occurred.

Check to see if there are any sources of noise or interference near the transmission path.

Note If you have made operational mistakes during this procedure, exit function selection (see step 0 ), and then restart from step 2 .

4 Set the indoor unit number.

D Press the ON/OFF button so that "- -" flashes in the unit number displayarea.

C Press the [ CLOCK] buttons ( and ) to select the unit numberof the indoor unit for which you want to perform function selection. The unitnumber changes to "00", "01", "02","03",04" and "AL" each time a button ispressed.

* To set modes 01 to 06 or 15 to 22 select unit number "00".* To set modes 07 to 14 or 23 to 28 carry out as follows:

• To set each indoor unit individually, select "01" to "04".• To set all the indoor units collectively, select "AL".

5 Confirm the refrigerant address and unit number.E Press the MODE button to confirm the refrigerant address and unit

number.After a while, "- - " will start to flash in the mode number display area.

E When the refrigerant address and unit number are confirmed by pressing the

MODE button, the corresponding indoor unit will start fan operation. This

helps you find the location of the indoor unit for which you want to perform functionselection. However, if "00" or "AL" is selected as the unit number, all the indoorunits corresponding to the specified refrigerant address will start fan operation.

* "88" will flash in the room temperature display area if the selected refrigerantaddress does not exist in the system.Furthermore, if "F" appears and flashes in the unit number display area and therefrigerant address display area also flashes, there are no units that corre-spond to the selected unit number. In this case, the refrigerant address and unitnumber may be incorrect, so repeat steps 2 and 3 to set the correct ones.

* When grouping different refrigerant systems, if an indoor unit other than theone to which the refrigerant address has been set performs fan operation,there may be another refrigerant address that is the same as the specified one.In this case, check the DIP switch of the outdoor unit to see whether such arefrigerant address exists.

6 Select the mode number.

F Press the [ TEMP] buttons ( and ) to set the desired modenumber.(Only the selectable mode numbers can be selected.)

7 Select the setting content for the selected mode.

G Press the MENU button. The currently selected setting number willflash, so check the currently set content.

F Press the [ TEMP] buttons ( and ) to select the desired setting

number.

8 Register the settings you have made in steps 3 to 7 .

E Press the MODE button. The mode number and setting number will startto flash and registration starts.

The mode number and setting number will stop flashing and remain lit, indicating theend of registration.

* If " - - - " is displayed for both the mode number and setting number and " " flashes in the room temperature display area, a transmission error may have occurred.Check to see if there are any sources of noise or interference near the transmission path.

9 If you wish to continue to select other functions, repeat steps 3 to 8 .

0 Complete function selection.

A Hold down the ( mode is 15 to 28) and buttons

simultaneously for at least two seconds. FILTER

After a while, the function selection screen will disappear and the air condi-tioner OFF screen will reappear.

* Do not operate the remote controller for at least 30 seconds after completingfunction selection. (No operations will be accepted even if they are made.)

Note If a function of an indoor unit is changed by function selection after installation is complete, make sure that a " " mark, etc., is given in the "Check" column of Table 1 to indicate the change.

Refrigerant addressdisplay section

Unit numberdisplay section

Mode numberdisplay section

00 refrigerant address

Indoor unit

Fan draftRemote controller

Unit number 01 Unit number 02

Outdoor unit

Unit number 03

Designate operation

Example) When the refrigerant address is set to 00 and the unit number is 02.

Mode numberdisplay section

Mode number 02 = Indoor tempreture detection

Setting number display section Setting number 3 = Remote controller built-in sensorSetting number 1 = Indoor unit operating average

TESTFUNCTIONSELECTION

TEST

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73

By setting unit number with the button, specified indoor unit starts performing fan operation. Detect which unit is assigned to which number using this function. If unit number is set to AL, all the indoor units in same refrigerant system start performing fan operation simultaneously.

[Operating instructions]1 Check the function settings.2 Press the button twice continuously. → CHECK is lit and “00” blinks.

Press the temp button once to set “50”. Direct the wireless remote controller toward the receiver of the indoor unit and press the button.

3 Set the unit number.Press the temp button to set the unit number. (Press “01” to specify the indoor unit whose unit number is 01.) Direct the wireless remote controller toward the receiver of the indoor unit and press the button.

* If a unit number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the unit number setting.

* If the signal was not received by the sensor, you will not hear a beep or a “double beep” may be heard. Reenter the unit number setting.

4 Select a mode.Press the temp button to set a mode. Press “24” to turn on the function that raises the set temperature by 4 degree during heat operation. Direct the wireless remote controller toward the sensor of the indoor unit and press the button.→ The sensor-operation indicator will flash and beeps will be heard to indicate the current setting number.Current setting number: 1 = 1 beep (one second)

2 = 2 beeps (one second each)3 = 3 beeps (one second each)

* If a mode number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the mode number.

* If the signal was not received by the sensor, you will not hear a beep or a “double beep” may be heard. Reenter the mode number.

5 Select the setting number.Press the temp button to select the setting number. (02: Not available)Direct the wireless remote controller toward the receiver of the indoor unit and press the button.→ The sensor-operation indicator will flash and beeps will be heard to indicate the the setting number.

Setting number: 1 = 2 beeps (0.4 seconds each)2 = 2 beeps (0.4 seconds each, repeated twice)3 = 2 beeps (0.4 seconds each, repeated three times)

* If a setting number that cannot be recognized by the unit is entered, the setting will turn back to the original setting.* If the signal was not received by the sensor, you will not hear a beep or a “double beep” may be heard. Reenter the setting number.6 Repeat steps 4 and 5 to make an additional setting without changing unit number.7 Repeat steps 3 to 5 to change unit number and make function settings on it.8 Complete the function settings

Press button.* Do not use the wireless remote controller for 30 seconds after completing the function setting.

ON/OFF TEMP

FAN

VANEMODE

CHECK LOUVER

TEST RUN

AUTO STOP

AUTO START

h

min

CHECK

RESETSET CLOCK

h

CHECK

min

h

The flow of the function selection procedure is shown below. This example shows how to turn off the function that raises the set temperature by 4 degrees during HEAT operation . The procedure is given after the flow chart.

1 Check the function selection setting.

2 Switch to function selection mode.(Enter address "50" in troubleshootingmode, then press the HOUR button.)

Troubleshooting mode is the mode entered whenyou press the INSPECT button twice to display"INSPECT".

3 Specify unit No. "01" (since the function applies to unit 01).(Set address "01" while still in troubleshooting mode, then press the MINUTE button.)

Note: You can't specify the refrigerant address.

4 Select mode No. "24" (function that raises set temperature by 4 degrees during HEAT operation).(Set address "24" while still in troubleshooting mode, then press the HOUR button.)

6

Finished

8 End function selection mode.(End troubleshooting mode.)

YES

NO

Note: When you switch to function selection modeon the wireless remote controller's operationarea, the unit ends function selection modeautomatically if nothing is input for 10 minutesor longer.

5 Select setting No. "02" (OFF).(Set address "02" while still in troubleshooting mode, then press the HOUR button.)

Change unit No.

YES

NO

7

[Flow of function selection procedure]

13-1-2. Selecting functions using the wireless remote controller (Type C)Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refriger-ant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller.

h

min

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74

The setting of the following remote controller functions can be changed using the remote controller function selection mode.Change the setting when needed.

Item 11.Change Language("CHANGE LANGUAGE")2.Function limit("FUNCTION SELECTION")

3.Mode selection("MODE SELECTION")

4.Display change("DISP MODE SETTING")

Item 3 (Setting content)• Display in multiple languages is possible.

• Setting the range of operation limit (operation lock)• Setting the use or non-use of "automatic" operation mode• Setting the temperature adjustable range (maximum, minimum)• Selecting main or sub remote controller

* When two remote controllers are connected to one group, one controller must be set to sub.• Setting the use or non-use of clock function• Setting the timer type• Contact number display in case of error• Setting the telephone number• Setting the temperature unit (: or °F) to display• Setting the use or non-use of the display of indoor (suction) air temperature• Setting the use or non-use of the display of "Cooling" or "Heating" display during operation with automatic mode

Item 2Language setting to display

(1) Operation function limit setting (operation lock) ("LOCKING FUNCTION")(2) Use of automatic mode setting ("SELECT AUTO MODE")(3) Temperature range limit setting ("LIMIT TEMP FUNCTION")(1) Remote controller main/sub setting ("CONTROLLER MAIN/SUB")

(2) Use of clock setting ("CLOCK")(3) Timer function setting ("WEEKLY TIMER")(4) Contact number setting for error situation ("CALL.")

(1) Temperature display :/°F setting ("TEMP MODE :/°F")(2) Suction air temperature display setting ("ROOM TEMP DISP SELECT")(3) Automatic cooling/heating display setting ("AUTO MODE DISP C/H")

[Function selection flowchart] Refer to next page.[1] Stop the air conditioner to start remote controller function selection mode. [2] Select from item1. [3] Select from item2. [4] Make the setting.(Details are specified in item3) [5] Setting completed. [6] Change the display to the normal one. (End)

➔➔➔

➔ ➔

[Detailed setting][4] -1. CHANGE LANGUAGE settingThe language that appears on the dot display can be selected.• Press the [ MENU] button to change the language.1 Japanese (JP), 2English (GB), 3German (D), 4Spanish (E),5 Russian (RU), 6 Italian (I), 7Chinese (CH), 8 French (F)

[4] -2. Function limit(1) Operation function limit setting (operation lock)• To switch the setting, press the [ ON/OFF] button.1 no1 : Operation lock setting is made on all buttons other than

the [ ON/OFF] button.2 no2 : Operation lock setting is made on all buttons.3 OFF (Initial setting value) : Operation lock setting is not made* To make the operation lock setting valid on the normal screen, it is

necessary to press buttons (Press and hold down the [FILTER]and [ ON/OFF] buttons at the same time for two seconds.) onthe normal screen after the above setting is made..

(2) Use of automatic mode settingWhen the remote controller is connected to the unit that has auto-matic operation mode, the following settings can be made.• To switch the setting, press the [ ON/OFF] button.1 ON (Initial setting value) : The automatic mode is displayed when

the operation mode is selected.2 OFF : The automatic mode is not display

when the operation mode is selected.

[4] -3. Mode selection setting(1) Remote controller main/sub setting• To switch the setting, press the [ ON/OFF] button.1 Main : The controller will be the main controller.2 Sub : The controller will be the sub controller.

(2) Use of clock setting• To switch the setting, press the [ ON/OFF] button.1 ON : The clock function can be used.2 OFF: The clock function cannot be used.

(3) Timer function setting• To switch the setting, press the [ ON/OFF] button (Choose one of

the followings.).1 WEEKLY TIMER (initial setting on MA deluxe):

The weekly timer can be used.2 AUTO OFF TIMER: The auto off timer can be used.

SIMPLE TIMER (Default setting on MA smooth):The simple timer can be used.

4

3

TIMER MODE OFF: The timer mode cannot be used.* When the use of clock setting is OFF, the "WEEKLY TIMER" cannot be

used.

(4) Contact number setting for error situation• To switch the setting, press the [ ON/OFF] button.1 CALL OFF: The set contact numbers are not displayed in case of error.2 CALL **** *** **** : The set contact numbers are displayed in case

of error.

(3) Temperature range limit settingAfter this setting is made, the temperature can be changed within the set range.• To switch the setting, press the [ ON/OFF] button.1 LIMIT TEMP COOL MODE :

The temperature range can be changed on cooling/dry mode.2 LIMIT TEMP HEAT MODE :

The temperature range can be changed on heating mode.3 LIMIT TEMP AUTO MODE :

The temperature range can be changed on automatic mode.4 OFF (initial setting) : The temperature range limit is not active.* When the setting, other than OFF, is made, the temperature range limit setting

on cooling, heating and automatic mode is made at the same time. Howeverthe range cannot be limited when the set temperature range has not changed.

• To increase or decrease the temperature, press the [ TEMP ( ) or ( )] button.• To switch the upper limit setting and the lower limit setting, press the [ ]

button. The selected setting will flash and the temperature can be set. • Settable range

Cooling/Dry mode : Lower limit: 19 : ~ 30: Upper limit: 30 : ~ 19:Heating mode : Lower limit: 17 : ~ 28: Upper limit: 28 : ~ 17:Automatic mode : Lower limit: 19 : ~ 28: Upper limit: 28 : ~ 19:

CALL_ : The contact number can be set when the display is asshown on the left.

• Setting the contact numbersTo set the contact numbers, follow the following procedures.Move the flashing cursor to set numbers. Press the [ TEMP. ( ) and( )] button to move the cursor to the right (left). Press the [ CLOCK( ) and ( )] button to set the numbers.

[4] -4. Display change setting(1) Temperature display :/ F setting• To switch the setting, press the [ ON/OFF] button.1: : The temperature unit : is used.2 F: The temperature unit

°

° °F is used.

(2) Suction air temperature display setting• To switch the setting, press the [ ON/OFF] button.1 ON : The suction air temperature is displayed.2 OFF: The suction air temperature is not displayed.

(3) Automatic cooling/heating display setting• To switch the setting, press the [ ON/OFF] button.1 ON : One of "Automatic cooling" and "Automatic heating" is displayed

under the automatic mode is running.2 OFF: Only "Automatic" is displayed under the automatic mode.

13-2. FUNCTION SELECTION OF REMOTE CONTROLLER

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75

OFF

no1

no2

OFF

ON

OFF

ON

OFF

OFF

CALL-

ON

OFF

ON

OFF

:

°F

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION CLEAR

TEST

TEMP.

MENU

BACK DAYMONITOR/SET

CLOCK

ON/OFF

F

E

G

C D

H

B

A

I

G

G

G

G

G

G

E

E

G

G

G

G

E

G

E

G

G

G

G

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

D

EN

GE

ES

RU

IT

ZH

FR

JA

Hold down the E button and press the D button for 2 seconds.

Hold down the E button and press the D button for 2 seconds.

Remote controller function selection mode

E Press the operation mode button.G Press the TIMER MENU button.D Press the TIMER ON/OFF button.

Item1 Item2 Dot display

Item3

Room air temperature is not displayed.

One of "Automatic cooling" and "Automatic heating" is displayedunder the automatic mode is running. (Initial setting value)

Only "Automatic" is displayed under the automatic mode.

Normal display(Display when the air condition is not running)

ChangeLanguage

Functionselection

Modeselection

Displaymode setting

Operation lock setting is not used.(Initial setting value)

Operation lock setting is except On/Off buttons.

Operation lock setting is All buttons.

The automatic mode is displayed when the operation mode isselected. (Initial setting value)

The automatic mode is not displayed when the operation mode is selected.

The temperature range limit is not active. (Initial setting value)

The temperature range can be changed on cooling/dry mode.

The temperature range can be changed on heating mode.

The temperature range can be changed on automatic mode.

The remote controller will be the main controller. (Initial setting value)

The remote controller will be the sub controller.

The clock function can be used. (Initial setting value)

The clock function can not be used.

Weekly timer can be used. (Initial setting value)

Auto off timer can be used.

Simple timer can be used.

Timer mode can not be used.

The set contact numbers are not displayed in case of error.(Initial setting value)

The set contact numbers are displayed in case of error.

The temperature unit : is used. (Initial setting value)

The temperature unit °F is used.

Room air temperature is displayed. (Initial setting value)

Flowchart of Function SettingSetting language (English)

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14 EASY MAINTENANCE FUNCTION

● Reduces maintenance work drastically.● Enables you to check operation data of the indoor and outdoor units by remote controller.

Furthermore, use of maintenance stable-operation control that fixes the operating frequency, allows smooth inspection, even forinverter models.

14-1.MAINTENANCE MODE OPERATION METHOD* If you are going to use "14-2. GUIDE FOR OPERATION CONDITION", set the airflow to "High" before activating

maintenance mode.

● Switching to maintenance modeMaintenance mode can be activated eithaer when the air conditioner is operated or stopped.It cannot be activated during test run.w Maintenance information can be viewed even if the air conditioner is stopped.

D

A C B

Operation mode Compressor information Outdoor unit information Indoor unit information Confirm

Activate/cancel maintenance mode

■ Remote controller button information

(1) Press the TEST button for three seconds to switch to maintenance mode.

[Display A] MAINTENANCE

If stable operation is unnecessary or if you want to check the data with the air conditioner stopped, skip to step (4).

● Fixed Hz operationThe operating frequency can be fixed to stabilize operation of inverter model.If the air conditioner is currently stopped, start it by this operation.

(2) Press the MODE button to select the desired operation mode.

[Display A]

(3) Press the FILTER ( ) button to confirm the setting.

[Display D] Waiting for stabilization

HEATSTABLE MODE

STABLE MODECANCEL

COOLSTABLE MODE

Stable coolingoperation

Stable heatingoperation

Stable operationcancellation

Stabilized

After 10 to 20 minutes

Discharge temperature 64:

Remove theservice panel.

Measurethe intake airtemperature.

Measure the dischargetemperature.

Measure the outside airtemperature

●Indoor unit ●●Outdoor unit ●

Smooth Mainte-nance Function ● Conventional inspection work

Easy maintenance information (unit)Compressor Outdoor unit Indoor unit

Accumulated operating Heat exchanger7

Intake air

time (o10 hours) temperature (:) temperature (:)

Number of ON/OFF Discharge8

4

5

1

2

963

Heat exchanger

times (o10 times) temperature (:) temperature (:)

Operating Outside air Filter operating

current (A) temperature (:) time* (Hours)

* The filter operating time is the time that has elapsed since the filter was reset.

OC338B-3.qxp 06.7.11 10:55 AM

77

● Data measurementWhen the operation is stabilized, measure operation data as explained below.

(4) Press the [TEMP] buttons ( and ) to select the desired refrigerant address.

[Screen B]

(5) Select the type of data to be displayed.After selecting, go to step (6).

Compressor information

MENU button

[Display A]

Outdoor unit information

ON/OFF button

[Display A4 5 6

]

Indoor unit information

button

[Display A7 8 9

]

(6) Press the FILTER ( ) button to confirm the setting.

[Display example for accumulated operating time]

(7) Data is displayed on the display (at C).To check the data for each item, repeat steps (5) to (7).

(8) To cancel maintenance mode, press the TEST button for three seconds or press the ON/OFF button.

COMP ONx10 HOURS

COMP ONx100 TIMES

COMP ONCURRENT (A)

Cumulativeoperation time

ON/OFF Number Operating current1 2 3

OUTDOOR UNITH·EXC. TEMP

OUTDOOR UNITOUTLET TEMP

OUTDOOR UNITOUTDOOR TEMP

Heat exchangertemperature

Comp dischargetemperature

Outdoor ambienttemperature

INDOOR UNITINLET TEMP

INDOOR UNITH·EXC. TEMP

INDOOR UNITFILTER USE H

Indoor roomtemperature

Heat exchangertemperature

Filter operatingtime

12,340 hoursDisplay C

Waiting for response

Flashing

After approx.10 seconds

[1:1]Refrigerantaddress=00

[Twin]Refrigerantaddress=00

Outdoorunit

Indoor unit02

Indoor unit01

Outdoorunit

Remotecontroller

Remotecontroller

Indoor unit01

■ Refrigerant addressSingle refrigerant systemIn the case of single refrigerant system, the refrigerant addressis "00" and no operation is required.Simultaneous twin, triple and quad units belong to this category(single refrigerant system).

Multi refrigerant system (group control)Up to 16 refrigerant systems (16 outdoor units) can be con-nected as a group by one remote controller. To check or set therefrigerant addresses.

Refrigerantaddress00




Outdoorunit

Indoor unit01

Outdoorunit

Indoor unit01

Outdoorunit

Indoor unit01

Outdoorunit

Indoor unit01

Remotecontroller

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78

14-2.GUIDE FOR OPERATION CONDITION

Inspection item Result

Pow

er s

uppl

y

Loos

e co

n-ne

ctio

n

Breaker Good Retightened

Terminal block Outdoor Unit Good Retightened

Indoor Unit Good Retightened

(Insulation resistance) M"

(Voltage) V

1 Accumulated operating time Time

2 Number of ON/OFF times Times

3 Current A

4 Refrigerant/heat exchanger temperature COOL : HEAT :

5 Refrigerant/discharge temperature COOL : HEAT :

6 Air/outside air temperature COOL : HEAT :

(Air/discharge temperature) COOL : HEAT :

Appearance Good Cleaning required

Heat exchanger Good Cleaning required

Sound/vibration None Present

Air/intake air temperature COOL : HEAT :

(Air/discharge temperature) COOL : HEAT :

8

7

9

Refrigerant/heat exchanger temperature COOL : HEAT :

Filter operating time* Time

Decorative panel Good Cleaning required

Filter Good Cleaning required

Fan Good Cleaning required

Heat exchanger Good Cleaning required

Sound/vibration None Present

Com-

pressor

Tem

pera

ture

Cle

an

li-

ness

Out

door

Uni

t

Tem

pera

ture

Cle

anlin

ess

Indo

or U

nit

* The filter operating time is the time that has elapsed since the filter was reset.

Check PointsEnter the temperature differences between 5 , 4 , 7 and 8 intothe graph given below.Operation state is determined according to the plotted areas onthe graph.For data measurements, set the fan speed to "Hi" before activat-ing maintenance mode.

Is "D000" displayed stably on the remote

controller?

(5 Discharge temperature) – (4 Outdoor

heat exchanger temperature)

(7 Indoor intake air temperature) – (8

Indoor heat exchanger temperature)

Is "D000" displayed stably on the remote

controller?

(5 Discharge temperature) – (8 Indoor

heat exchanger temperature)

(8 Indoor heat exchanger temperature) –

(7 Indoor intake air temperature)

Coo

l

Classification Item Result

Inspection

Temperature

difference

Hea

tInspection

Temperature

difference

Stable Unstable

:

:

Stable Unstable

:

:

* Fixed Hz operation may not be possible under the following tempera-ture ranges.A)In cool mode, outdoor intake air temperature is 40 :or higher or

indoor intake air temperature is 23 : or lowerB)In heat mode, outdoor intake air temperature is 20 : or higher or

indoor intake air temperature is 25 : or lower* If the air conditioner is operated at a temperature range other than the

ones above but operation is not stabilized after 30 minutes or more haveelapsed, carry out inspection.

* In heat mode, the operation state may vary due to frost forming on theoutdoor heat exchanger.

:45

40

35

30

25

20

15

10

5

0 10 20 30 40 50 60 70 80

Normal

Filter inspection

Inspection C

Inspection A

Inspection B

:45

40

35

30

25

20

15

10

5

0 10 20 30 40 50 60 70 80 ::

Normal

Filter inspection

Inspection C

Inspection A

Inspection B

Cool mode Heat mode

( 7 I

ndoo

r in

take

air

tem

pera

ture

)— (8

Indo

orhe

at e

xcha

nger

tem

pera

ture

)

( 8 In

door

hea

t exc

hang

er te

mpe

ratu

re)

—( 7

Indo

or in

take

air

tem

pera

ture

)

[5 Discharge temperature] – [4 Outdoorheat exchanger temperature)

[5 Discharge temperature] – [8 Indoorheat exchanger temperature)

Result

Normal operation state

Filter may be clogged. *1

Performance has dropped. Detailed in-

spection is necessary.

Refrigerant amount is dropping.

Filter or indoor heat exchanger may be

clogged.

Area Check itemJudgment

Cool Heat

Normal

Filter inspection

Inspection A

Inspection B

Inspection C

* The above judgement is just guide based on Japanese standardconditions.It may be changed depending on the indoor and outdoor temperature.

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79

15 MONITORING THE OPERATION DATABYTHE REMOTE CONTROLLER

15-1. HOW TO "MONITOR THE OPERATION DATA"• Turn on the [Monitoring the operation data]

A

D

C

B

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(1) Press the TEST button for three seconds so that [Maintenance mode] appears on the screen (at A ).

(2) Press the CHECK button for three seconds to switch to [Maintenance monitor].

Note) It is not possible to switch to [Maintenance monitor] during data request in maintenance mode (i.e., while "- - - -" is flashing),since no buttons are operative.

Operating the service inspection monitor- - - ] appears on the screen (at D) when [Maintenance monitor] is activated.

(The display (at D ) now allows you to set a request code No.)(3) Press the [TEMP] buttons ( and ) to select the desired refrigerant address.

[Screen B ]

(4) Press the [CLOCK] buttons ( and ) to set the desired request code No.

(5) Press the FILTER button to perform data request.

(The requested data will be displayed at C in the same way as in maintenance mode.)

Data collected during operation of the remote controller will be displayed.The collected data such as temperature data will not be updated automatically even if the data changes.To display the updated data, carry out step (4) again.

Canceling the Monitoring the operation data

(6) While [Maintenance monitor] is displayed, press the CHECK button for three seconds to return to maintenance mode.

(7) To return to normal mode, press the ON/OFF button.

Example) Request code "004"Discharge temperature 69 ;Refrigerant address "00"

B: Refrigerant addressC: Data display areaD: Request code display area

[

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80

15-2. REQUEST CODE LIST* Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed.

Req

uest

cod

e

Request contentDescription

(Display range)Unit Remarks

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

Operation state

Compressor-Operating current (rms)

Compressor-Accumulated operating time

Compressor-Number of operation times

Discharge temperature (TH4)

Outdoor unit - Liquid pipe 1 temperature (TH3)

Outdoor unit - Liquid pipe 2 temperature

Outdoor unit-2-phase pipe temperature (TH6)

Outdoor unit-Outside air temperature (TH7)

Outdoor unit-Heat sink temperature (TH8)

Discharge super heat (SHd)

Sub-cool (SC)

Compressor-Operating frequency

Compressor-Target operating frequency

Outdoor unit-Fan output step

Outdoor unit-Fan 1 speed

(Only for air conditioners with DC fan motor)

Outdoor unit-Fan 2 speed

(Only for air conditioners with DC fan motor)

LEV (A) opening

LEV (B) opening

Primary current

DC bus voltage

Number of connected indoor units

Indoor unit-Setting temperature

Indoor unit-Intake air temperature <Measured by thermostat>

Indoor unit-Intake air temperature (Unit No. 1)

<Heat mode-4-deg correction>







Indoor unit - Liquid pipe temperature (Unit No. 1)




Indoor unit-Cond./Eva. pipe temperature (Unit No. 1)




Thermostat ON operating time

Test run elapsed time

Refer to 15-2-1. Detail Contents in Request Code.

0 – 50

0 – 9999

0 – 9999

3 – 217

-40 – 90

-40 – 90

-39 – 88

-39 – 88

-40 – 200

0 – 255

0 – 130

0 – 255

0 – 255

0 – 10

0 – 9999

0 – 9999

0 – 500

0 – 500

0 – 50

180 – 370

0 – 4

17 – 30

8 – 39

8 – 39

8 – 39

8 – 39

8 – 39

-39 – 88

-39 – 88

-39 – 88

-39 – 88

-39 – 88

-39 – 88

-39 – 88

-39 – 88

0 – 999

0 – 120

–

A

10 hours

100 times

:

:

:

:

:

:

:

:

Hz

Hz

Step

rpm

rpm

Pulses

Pulses

A

V

Units

:

:

:

:

:

:

:

:

:

:

:

:

:

:

Minutes

Minutes

"0" is displayed if the air conditioner is a single-fantype.

"0" is displayed if the target unit is not present.



Not possible to activate maintenance mode during the test run.

OC338B-3.qxp 06.7.11 10:55 AM

81

Req

uest

cod

e



50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

Indoor unit-Control state

Outdoor unit-Control state

Compressor-Frequency control state

Outdoor unit-Fan control state

Actuator output state

Error content (U9)

Signal transmission demand capacity

Contact demand capacity

External input state (silent mode, etc.)

Outdoor unit-Capacity setting display

Outdoor unit-Setting information

Outdoor unit-SW1 setting information









M-NET adapter connection (presence/absence)

Display of execution of replace/wash operation

Outdoor unit-Microcomputer version information

Outdoor unit-Microcomputer version information (sub No.)

Outdoor unit - Error postponement history 1 (latest)

Outdoor unit - Error postponement history 2 (previous)

Outdoor unit - Error postponement history 3 (last but one)

0 – 255

Refer to 15-2-1.Detail Contents in Request Code.




"0000": Not connected

Examples) Ver 5.01 ➝

Auxiliary information (displayed after

version information)

Examples) Ver 5.01 A000 ➝

Displays postponement code. (" - - " is

displayed if no postponement code is present)





–

–

–

–

–

–

%

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Ver

–

Code

Code

Code














"0001": Connected

"0000": Not washed"0001": Washed

"0501"

"A000"

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82

Req

uest

cod

e



103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

~

146

147

148

149

150

151

152

Displays error history. (" - - " is displayed if no history is present.)



: TH3

6 : TH6

7 : TH7

8 : TH8

0 : No thermistor error

Displayed in the same way as request code "0".

0 – 50

0 – 9999

0 – 9999

3 – 217

-40 – 90

-40 – 90

-39 – 88

-39 – 88

-40 – 200

0 – 255

0 – 130

0 – 255

0 – 10

0 – 9999

0 – 9999

0 – 500

0 – 500

0 – 999

-39 – 88

-39 – 88

-39 – 88

-39 – 88

-39 – 88

-39 – 88

Code

Code

Code

Sensor

number

–

A

10 hours

100 times

:

:

:

:

:

:

:

:

Hz

Step

rpm

rpm

Pulses

Pulses

Minutes

:

:

:

:

:

:

"0" is displayed if the air conditioner is a single-

fan type.

Average value of all indoor units is displayed if the air condi-

tioner consists of two or more indoor units (twin, triple, quad).

Average value of all indoor units is displayed if the air condi-

tioner consists of two or more indoor units (twin, triple, quad).

Error history 1 (latest)

Error history 2 (second to last)

Error history 3 (third to last)

Abnormal thermistor display

(TH3/TH6/TH7/TH8)

Operation mode at time of error

Compressor-Operating current at time of error

Compressor-Accumulated operating time at time of error

Compressor-Number of operation times at time of error

Discharge temperature at time of error

Outdoor unit - Liquid pipe 1 temperature (TH3) at time of error

Outdoor unit - Liquid pipe 2 temperature at time of error

Outdoor unit-2-phase pipe temperature (TH6) at time of error

Outdoor unit-Outside air temperature (TH7) at time of error

Outdoor unit-Heat sink temperature (TH8) at time of error

Discharge super heat (SHd) at time of error

Sub-cool (SC) at time of error

Compressor-Operating frequency at time of error

Outdoor unit at time of error

• Fan output step


• Fan 1 speed (Only for air conditioners with DC fan)


• Fan 2 speed (Only for air conditioners with DC fan)

LEV (A) opening at time of error

LEV (B) opening at time of error

Thermostat ON time until operation stops due to error

Indoor - Liquid pipe temperature at time of error

Indoor-2-phase pipe temperature at time of error

Indoor at time of error

• Intake air temperature <Thermostat judge temperature>

Indoor-Actual intake air temperature

Indoor - Liquid pipe temperature

Indoor-2-phase pipe temperature

3

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83

Req

uest

cod

e



153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

~

189

190

191

192

~

764

765

766

767

0 – 9999

0 – 9999

0 – 255 Fan control data

00 **" "**" indicates fan control data.

"00 **" "**" indicates fan control data.

Refer to 15-2-1 Detail Contents in Request Code.

Undefined


Undefined

Examples) Ver 5.01 ➝ "0501"

Auxiliary information (displayed after version information)

Examples) Ver 5.01 A000 ➝ "A000"

1 hour

10 hours

–

–

–

–

–

–

–

–

Ver

–

For indoor fan phase control

For indoor fan pulsation control

For indoor DC brushless motor control

Indoor-Fan operating time

(After filter is reset)

Indoor-Total operating time

(Fan motor ON time)

Indoor fan output value (Sj value)

Indoor fan output value

(Pulsation ON/OFF)

Indoor fan output value (duty value)

Indoor unit-Model setting information

Indoor unit-Capacity setting information

Indoor unit-SW3 information

Wireless pair No. (indoor control board side) setting

Indoor unit-SW5 information

Indoor unit-Microcomputer version information

Indoor unit-Microcomputer version information (sub No.)

Stable operation (Heat mode)

Stable operation (Cool mode)

Stable operation cancellation

This request code is not provided to collect data. It is used to fix the operation state.

This request code is not provided to collect data. It is used to fix the operation state.

This request code is not provided to collect data. It is used to cancel the operation state that has been

fixed by request codes "765" and "766".

"


OC338B-3.qxp 06.7.11 10:55 AM

84

Frequency control state 2

DisplayDischarge temperature Condensation temperature Anti-freeze Heat sink temperature

overheat prevention overheat prevention protection control overheat prevention01 Controlled2 Controlled3 Controlled Controlled4 Controlled5 Controlled Controlled6 Controlled Controlled7 Controlled Controlled Controlled8 Controlled9 Controlled ControlledA Controlled Controlledb Controlled Controlled ControlledC Controlled Controlledd Controlled Controlled ControlledE Controlled Controlled ControlledF Controlled Controlled Controlled Controlled

15-2-1. Detail Contents in Request Code

[Operation state] (Request code ":0")

Data display

Example) Request code "004"Discharge temperature 69 :Refrigerant address "00"

B: Refrigerant addressC: Data display areaD: Request code display area

A

B

C

D

C 4Relay output state

Operation mode

[Indoor unit – Control state] (Request code :"50 ")

Data display

Operation mode

Display Operation mode0 STOP • FANC COOL • DRYH HEATd Defrost

Relay output state

DisplayPower currently

Compressor Four-way valve Solenoid valvesupplied to compressor

Unit No. 4 state

Unit No. 3 state

Unit No. 2 state

Unit No. 1 state

Display State0 Normal1 Preparing for heat operation.2 –3 –4 Heater is ON.5 Anti-freeze protection is ON.6 Overheat protection is ON.7 Requesting compressor to turn OFF.F There are no corresponding units.

[Outdoor unit – Control state] (Request code ":51")

Data display State

0 0 0 0 Normal0 0 0 1 Preparing for heat operation.0 0 0 2 Defrost

[Compressor – Frequency control state] (Request code ":52")

Data display

0 0Frequency control state 2



Display Current limit control0 No current limit1 Primary current limit control is ON.2 Secondary current limit control is ON.

–

ONON

012345678A

–

ONONONON

–

ONON

ONON

ON

–ON

ON

ON

ON

OC338B-3.qxp 06.7.11 10:55 AM

85

[Fan control state] (Request code :"53")

Data display

Fan step correction value by heat sink temperature overheat prevention control

Fan step correction value by cool condensation temperature overheat prevention control

0 0

Display Correction value- (minus) – 1

0 0

2

[Actuator output state] (Request code :"54")

Data display

Actuator output state 1


0 0


Display SV1 Four-way valve Compressor

01

23

45

67

89

Ab

CdEF

ON

ON

ON

ON

ON

ON

ON

ON

ONON

ONON

ONON

ONON

ONON

ONON

ONONONON

ONON

ONON

ONONONON


Display 52C SV2 SS

01

234567

ON

ON

ON

ON

ONON

ONON

ONONONON

[Error content (U9)] (Request code :"55")

Data display

Error content 1

Error content 2

0 0

Error content 1 : Detected

DisplayOvervoltage Undervoltage L1-phase Power synchronizing

error error open error signal error0123456789AbCdEF

Error content 2 : Detected

DisplayConverter Fo

PAM errorerror

0123

Compressor iswarming up

1 +1+2

OC338B-3.qxp 06.7.11 10:55 AM

86

[Contact demand capacity] (Request code "61")

Data display 0 0 0Setting content

[External input state] (Request code "62")

Data display 0 0 0Input state

Input state : Input present

DisplayContact demand Silent mode Spare 1 Spare 2

input input input input

0123456789AbCdEF

[Outdoor unit -– Capacity setting display] (Request code : "70")

Data display Capacity

10 50 9 35

11 6014 7120 10025 12528 14040 20050 250

[Outdoor unit – Setting information] (Request code "71")

Data display

Setting information 1


0 0Setting information 1

Display Defrost mode0 Standard1 For high humidity


DisplaySingle-/ Heat pump/

three-phase cooling only

0Single-phase

Heat pump1 Cooling only2

Three-phaseHeat pump

3 Cooling only

Setting content

Display Setting valueSetting

SW7-1 SW7-2

01 50% ON

ON

2 75% ONON

0%

3 100%

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87

SW1, SW2, SW6, SW71 2 3 4 5 6

0 0 0 0 0 0 00 001 0 0 0 0 0 00 010 1 0 0 0 0 00 021 1 0 0 0 0 00 030 0 1 0 0 0 00 041 0 1 0 0 0 00 050 1 1 0 0 0 00 061 1 1 0 0 0 00 070 0 0 1 0 0 00 081 0 0 1 0 0 00 090 1 0 1 0 0 00 0A1 1 0 1 0 0 00 0b0 0 1 1 0 0 00 0C1 0 1 1 0 0 00 0d0 1 1 1 0 0 00 0E1 1 1 1 0 0 00 0F

00 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 1A00 1B00 1C00 1D00 1E00 1F00 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 2A00 2B00 2C00 2D00 2E00 2F00 3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 3A00 3B00 3C00 3D00 3E00 3F

0 0 0 0 1 01 0 0 0 1 00 1 0 0 1 01 1 0 0 1 00 0 1 0 1 01 0 1 0 1 00 1 1 0 1 01 1 1 0 1 00 0 0 1 1 01 0 0 1 1 00 1 0 1 1 01 1 0 1 1 00 0 1 1 1 01 0 1 1 1 00 1 1 1 1 01 1 1 1 1 00 0 0 0 0 11 0 0 0 0 10 1 0 0 0 11 1 0 0 0 10 0 1 0 0 11 0 1 0 0 10 1 1 0 0 11 1 1 0 0 10 0 0 1 0 11 0 0 1 0 10 1 0 1 0 11 1 0 1 0 10 0 1 1 0 11 0 1 1 0 10 1 1 1 0 11 1 1 1 0 10 0 0 0 1 11 0 0 0 1 10 1 0 0 1 11 1 0 0 1 10 0 1 0 1 11 0 1 0 1 10 1 1 0 1 11 1 1 0 1 10 0 0 1 1 11 0 0 1 1 10 1 0 1 1 11 1 0 1 1 10 0 1 1 1 11 0 1 1 1 10 1 1 1 1 11 1 1 1 1 1

[Outdoor unit switch setting display (SW1 to SW10, except SW3)] (Request codes: 73 to 82)0: Swich OFF 1: Swich ON

Data displaySW5

1 2 3 4

0 0 0 0 00 001 0 0 0 00 010 1 0 0 00 021 1 0 0 00 030 0 1 0 00 041 0 1 0 00 050 1 1 0 00 061 1 1 0 00 070 0 0 1 00 081 0 0 1 00 090 1 0 1 00 0A1 1 0 1 00 0b0 0 1 1 00 0C1 0 1 1 00 0d0 1 1 1 00 0E1 1 1 1 00 0F

0: Swich OFF 1: Swich ON

Data display

SW81 2 3

0 0 0 00 001 0 0 00 010 1 0 00 021 1 0 00 030 0 1 00 041 0 1 00 050 1 1 00 061 1 1 00 07


Data display

SW4, SW9, SW101 2

0 0 00 001 0 00 010 1 00 021 1 00 03


Data display

OC338B-3.qxp 06.7.11 10:55 AM

88

[Indoor unit – Model setting information] (Request code : 162)

Data display

0 0

See the table on the right.

Display Model setting state Display Model setting state

00 PSA-RP•GA, PSH-PGAH 2001 21 PKA-RP•FAL(2), PKH-P•FALH02 PEAD-RP• EA(2)/GA, PEHD-P•EAH 22 PCA-RP•GA(2), PCH-P•GAH03 SEZ-KA•VA 2304 2405 SLZ-KA•VA(L) 2506 PCA-RP•

PEH-RP•MYA

HA 2607 2708 2809 290A 2A0b 2b PKA-RP•GAL, PKH-P•GALH0C 2C0d 2d0E 2E0F 2F PLA-RP• AA

PLA-RP• AA2

10 3011 PEA-RP•EA 31 PLH-P•AAH12 MEXZ-GA•VA(L) 3213 3314 3415 3516 3617 3718 3819 391A 3A1b 3b1C 3C1d 3d1E 3E1F 3F

[Indoor unit – Capacity setting information] (Request code 163 )

Data display

0 0


Display Capacity setting state Display Capacity setting state

00 12 10 11201 16 11 12502 22 12 14003 25 13 16004 28 14 20005 32 15 22406 36 16 25007 40 17 28008 45 1809 50 190A 56 1A0b 63 1b0C 71 1C0d 80 1d0E 90 1E0F 100 1F

Display Pair No. setting state

00 No. 001 No. 1 J41 disconnected02 No. 2 J42 disconnected03 No. 3 J41, J42 disconnected

[Wireless pair No. (indoor control board side) setting] (Request code 165 )

Data display

0 0


OC338B-3.qxp 06.7.11 10:55 AM

89

16 DISASSEMBLY PROCEDURE

OPERATING PROCEDURE PHOTOS

PUHZ-RP200YHA PUHZ-RP250YHAPUHZ-RP200YHA1 PUHZ-RP250YHA1

Photo 1 (front)

Photo 2 (rear)

Service panelfixing screw(8pcs)

Front panelfixing screw(7pcs)

Front panel

1. Removing the service panel(1) Remove 8 service panel fixing screws (5o10)

(see photo 1) .(2) Remove the service panel by sliding it towards you.

w It is the panel to remove when you maintain the refrigerant circuit, electrical parts, and compressor.

2. Removing the rear panel(1) Remove 7 rear panel fixing screws (5o10) (see photo 2).(2) Remove the rear panel by sliding it towards you.

w It is the panel to remove when you maintain the machine room from the rear side.

3. Removing the front panel(1) Remove 7 front panel fixing screws (5o10) (see photo 1).(2) Remove the front panel by sliding it towards you, then upward.

w It is the panel to remove when you maintain the thermistor and the fan motor.

w When servicing, pay careful attention in removing heavy parts.w Collect the refrigerant before you service the refrigerant system.w When brazing, make sure to apply the non-oxidizing braze.

Rear guard

Rear guardfixing screw(7pcs)

Rear panel

Rear panelfixing screw(7pcs)

Service panel

OC338B-3.qxp 06.7.11 10:55 AM

90


Photo 5

Photo 3

Photo 4

4. Removing the fan motor(1) Remove

• 14 fan guard fixing screws (5o15) (see photo 3).• Fan guard by sliding it upward.• Cap by pulling it upward (see photo 4).• Propeller fixing nut (M16, left screw).• Washer ([32) and the propeller from the fan motor shaft

(see photo 4).• Propeller holding washer ([40) from the fan motor shaft.

Note 1: Be careful not to drop any of the cap, nuts, and washersinside the unit.

(2) Remove the service panel and the front panel.(3) Disconnect the relay connector of the fan motor lead wire

in the electrical parts box.(4) Loosen all the clamps for the fan motor lead wire, and

pull out the wire from the penetration part.(5) Remove

• 4 motor support fixing screws (5o15).• Motor support together with the fan motor (see photo 4).

Note 2: The motor support and the fan motor should be held by two people.

(6) Remove• 4 fan motor fixing screws (M6o16).• Fan motor (see photo 5).

Fan guard

Fan guardfixingscrew

Fan guardfixingscrew

Service panelUnit leg

Front

Propeller

Cap

Motor supportfixing screw (4pcs)

Fan motor lead wire Nut tightening torque 20i2N•m

Fan motor Fan motor fixing screw (4pcs)

Motor support

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91


Photo 6

Photo 7

5. Removing the electrical parts box(1) Remove

• Service panel.• Waterproof sheet for the electrical parts.

(2) Disconnect• Power wire from TB1, and the indoor / outdoor connecting

wire from TB2 (see photo 6).• Fan motor relay connector.• Lead wires in the compressor terminal cover (see photo 6).

(3) Disconnect all the following connectors from the con-troller circuit board.• LEV-A (Linear expansion valve / 6P, white)• TH3 (Thermistor <Outdoor pipe> / 2P, white)• TH32 (Thermistor <Outdoor pipe> / 2P, black)• TH4 (Thermistor <Discharge> / 2P, white)• TH6/7 (Thermistor <Outdoor 2-phase pipe>, <Outdoor> / 4P,

red)• 63H (High pressure switch / 3P, yellow)• 63L (Low pressure switch / 3P, red)• 21S4 (4-way solenoid valve / 3P, green)• SV2 (Bypass solenoid valve / 3P, blue)

(4) Remove• 4 electrical parts box fixing screws (5o10).• Electrical parts box by sliding it towards you (see photo6).

Electrical parts box fixing screw

OutdoorController circuit board

Electricalparts box

Terminalblock (TB1)

Electricalparts boxpedestal

Terminalblock(TB2)

Compressor Cover panel

Coverpanel fixing screw

Terminal coverScrew tighteningtorque 1.7~2.1N•m

6. Removing the thermistor <Outdoor 2-phase pipe> (TH6)and thermistor <Outdoor> (TH7)

w TH6 and TH7 are replaced together, since they are combined at the connector to the controller circuit board.

(1) Remove the service panel and the front panel.(2) Disconnect the connector TH6/7 (4P, red) from the controller

circuit board.(3) Loosen all the clamps for the lead wire and cut 2 fasteners

(see photo 7).(4) Pull out

• Thermistor <Outdoor 2-phase pipe> (TH6) from the sensor holder mounted on the heat exchanger.

• Thermistor <Outdoor pipe> (TH7) from the sensor holder (see photo 7).

7. Removing the thermistor <Outdoor pipe>(1) Remove the service panel and the front panel.(2) Disconnect the connector TH3 (2P, white) or TH32 (2P, black)

from the controller circuit board.(3) Loosen all the clamps for the lead wire and cut 2 fasteners

(see photo 7).(4) Pull out the thermistor (TH3 or TH32) from the sensor holder

mounted on the heat exchanger (see photo 7).

w When there is difficulty in pulling out TH3 from the heatexchanger, open the side panel (right) by removing 2 side panel fixing screws (5o10).

Thermistor<Outdoor> (TH7)

Thermistor <Outdoor 2-phase pipe> (TH6)

Clamp

Fan motorlead wire penetrationpart

Thermistor<Outdoor pipe>(TH3)

Thermistor <Outdoor pipe>(TH32)

FastenerClamp

Clamp

OC338B-4.qxp 06.7.11 10:56 AM

92


Photo 9

Photo 88. Removing the thermistor <Discharge>(1) Remove the service panel.(2) Disconnect the connector TH4 (2P, white) from the controller

circuit board.(3) Loosen all the clamps for the lead wire (see photo 7).(4) Pull out the thermistor (TH4) from the sensor holder mounted

on the compressor discharging pipe (see photo 8).

9. Removing the 4-way solenoid valve coil, the linear expansion valve coil, and the bypass solenoid valve coil

(1) Remove the service panel.

<4-way solenoid valve coil>(2) Disconnect the connector 21S4 (3P, green) from the controller

circuit board.(3) Loosen all the clamps for the lead wire and cut 2 fasteners

(see photo 7).(4) Remove the 4-way solenoid valve coil fixing screw (M5o6

for 200/250YHA, M4o6 for 200/250YHA1)(see photo 9).(5) Remove the 4-way solenoid valve coil by sliding it towards

you (see photo 8, 9).

<Bypass solenoid valve coil>(2) Disconnect the connector SV2 (3P, blue) from the controllercircuit board.(3) Loosen all the clamps for the lead wire and cut 2 fasteners

(see photo 7).(4) Remove the bypass solenoid valve coil fixing screw (M5o6)

(see photo 9).(5) Remove the bypass solenoid valve coil by sliding it upward.

<Linear expansion valve coil>2. Disconnect the connector LEV-A (6P, white) from the controllercircuit board.3. Loosen all the clamps for the lead wire and cut 2 fasteners

(see photo 7).4. Remove the linear expansion valve coil by sliding it upward(see photo 9).

Note) When attaching the coil, make sure to tie the lead wires with the fasteners that are equivalent to the ones youjust cut.

Bypass solenoidvalve

Thermistor <Discharge>(TH4)

4-way solenoidvalve coil

4-way solenoidvalve

<Side panel (right) is removed>

Linear expan-sion valve

Linear expan-sion valve coil

Bypasssolenoidvalve coilfixing screw

Bypasssolenoidvalve coil

4-way sole-noid valve coil fixingscrew

4-waysolenoidvalve coil

4-way sole-noid valve

Valve bed support

Valve bedsupport fixing screw

OC338B-4.qxp 06.7.11 10:56 AM

93


Photo 10

Photo 11

10. Removing the 4-way solenoid valve(1) Remove

• Service panel.• 3 cover panel fixing screws (5o10).• Cover panel (see photo 6).• 4-way solenoid valve coil (see photo 8, 9).• 2 valve bed support fixing screws (5o10), then valve

bedsupport (see photo 9).• 4 valve bed fixing screws (5o10), 4 stop valve fixing screws (5o16), then valve bed (see photo 15).

(2) Collect the refrigerant.(3) Remove 4-way solenoid valve together with the pipes from 3

welded points shown in the photo 10.(4) Separate 4 welded pipes from the 4-way solenoid valve.

Note 1: Collect the refrigerant without releasing it in the air.Note 2: The welded points can be accessed easily by removing

the right side panel.Note 3: When installing the 4-way solenoid valve, cover it

with a wet cloth to prevent it from heating (120 ;;or more), then braze the pipe (non-oxidizing braze).

11. Removing the linear expansion valve(1) Remove

• Service panel.• 3 cover panel fixing screws (5o10).• Cover panel (see photo 6).• Linear expansion valve coil (see photo 11).• 2 valve bed support fixing screws (5o10), then valve bed

support (see photo 9).• 4 valve bed fixing screws (5o10), 4 stop valve fixing screws

(5o16), then valve bed (see photo 15).(2) Collect the refrigerant.(3) Remove the linear expansion valve from 2 welded points.

Note 1: Collect the refrigerant without releasing it in the air.Note 2: The welded points can be accessed easily by removing

the right side panel.Note 3: When installing the linear expansion valve, cover it

with a wet cloth to prevent it from heating (120 ;; or more), then braze the pipe (non-oxidizing braze).

Bypass solenoidvalve

Thermistor<Discharge>

3 welded points of the4-way solenoid valve 4-way solenoid valve

<Side panel (right) is removed>

Linear expansionvalve

Linear expansionvalve coil

OC338B-4.qxp 06.7.11 10:56 AM

94

Photo 12

Lead wire for thehigh pressureswitch

High pressureswitch

Lead wire forthe low pressureswitch

Low pressureswitch

OPERATING PROCEDURE PHOTOS & ILLUSTRATION12. Removing the bypass solenoid valve(1) Remove

• Service panel• 3 cover panel fixing screws (5o10).• Cover panel (see photo 6).• Bypass solenoid valve coil (see photo 9).• 2 valve bed support fixing screws (5o10), then valve bed


(5o16), then valve bed (see photo 15).(2) Collect the refrigerant.(3) Remove the bypass solenoid valve from 2 welded points.

Note 1: Collect the refrigerant without releasing it in the air.Note 2: The welded points can be accessed easily by

removing the right side panel.

13. Removing the low pressure switch and the high pressure switch

(1) Remove• Service panel (see photo 1).• 3 cover panel fixing screws (5o10).• Cover panel (see photo 6).• 2 valve bed support fixing screws (5o10), then valve bed

support (see photo 9).• 4 valve bed fixing screws (5o10), 4 stop valve fixing screws (5o16), then valve bed (see photo 15).

(3) Disconnect the lead wire for the low pressure switch or the high pressure switch (see photo 12).

(4) Collect the refrigerant(5) Remove the low pressure switch or the high pressure switch

from the welded part.

Note 1: Collect the refrigerant without releasing it in the air.Note 2: The welded points can be accessed easily by

removing the right side panel.Note 3: When installing the low / high pressure switch,

cover it with a wet cloth to prevent it fromheating (100 ;; or more), then braze the pipe (non-oxidizing braze).

OC338B-4.qxp 06.7.11 10:56 AM

95

Photo 13

PHOTOS & ILLUSTRATIONOPERATING PROCEDURE

14. Removing the reactor(1) Remove

• Service panel• 2 screws (4o8) that hold the terminal block fixing metal plate

in front of the electrical parts box, then slightly pull the platetowards you.

• 4 screws (4o8) that hold the controller circuit board fixing metal plate in front of the electrical parts box, then tilt the plate towards you (see photo 6).

• 3 reactor fixing screws (4o8).• Remove the reactor by sliding it upward (see photo 14).

photo 1515. Removing the compressor(1) Remove

• Service panel (see photo 2).• 3 cover panel fixing screws (5o10).• Cover panel (see photo 6).• 2 valve bed support fixing screws (5o10), then valve bed


(5o16), then valve bed (see photo 15).• Terminal cover.• 3 lead wire fixing screws (M5o10), then disconnect the lead

wire (see photo 15).(2) Collect the refrigerant.(3) Remove the sound insulation.(4) Disengage the welded points of the compressor inlet and dis

charge pipes.(5) Remove 3 compressor fixing nuts by using a spanner or a

adjustable wrench.Note: Collect the refrigerant without releasing it in the air.

Valve bed fixingscrew

Valve bedsupport

Terminal

Compressor

Compressorfixing nut (3pcs)

Valve bedfixingscrew

Valve bed

Photo 14

screws

screws

screws

screws

Reactor

OC338B-4.qxp 06.7.11 10:56 AM

96


Photo 17

Photo 1616. Removing the accumulator(1) Remove

• Service panel (see photo 1).• Electrical parts box (see photo 6).• 2 electrical parts box leg fixing screws (5o10), then electrical

parts box legs (see photo 6).• 2 lower fixing screws (5o10) of the heat sink duct.• 2 screws (4o10) which hold the metal plate above the heat

sink, then remove the plate.• Fan guard.• 3 upper fixing screws (5o10) of the heat sink duct located

below the fan motor, then remove the hear sink duct (see photo 15).

(2) Collect the refrigerant.(3) Disengage 2 welded points of the accumulator inlet and outlet

(see photo 17).(4) Remove 4 accumulator fixing screws (5o10), then take out the

accumulator.

Note 1: Collect the refrigerant without releasing in the air.Note 2: The welded points can be accessed easily by remov-

ing the rear panel. When servicing from the rear side, remove the rear panel first, then follow the procedurefrom number 2 (collecting the refrigerant) mentioned above (see photo 16).

Fan motor

Upper heat sink duct fixing screw (3pcs)

Accumulator

Accumulatorfixing screw (4pcs)

<Viewed from rear side>

OC338B-4.qxp 06.7.11 10:56 AM

97

PUHZ-RP200/250

1

1

2

2

2

1

1

1

1

1

1

1

1

1

2

1

1

1

1

2

2

2

1

1

1

1

1

1

1

1

1

2

1

1

CONTROLLER CIRCUIT BOARD


CIRCUIT BOARD SUPPORT PLATE

FUSE

FUSE

FUSE HOLDER

NOISE FILTER CIRCUIT BOARD


TERMINAL BLOCK (POWER SUPPLY)

TERMINAL BLOCK (INDOOR / OUTDOOR)

REACTOR

RUSH CURRENT PROTECT RESISTOR

POWER CIRCUIT BOARD

POWER CIRCUIT BOARD

ELECTRICAL PARTS BOX RIGHT SIDE PLATE

HEAT SINK

FAN CONTROLLER CIRCUIT BOARD


MAIN SMOOTHING CAPACITOR

ELECTRICAL PARTS BOX

WATERPROOF SHEET FOR THE ELECTRICAL PARTS

T7W E27 315

T7W E41 315

—

R01 E02 239

R01 E03 239

R01 30L 241

T7W E06 346

T7W E15 346

T7W E06 716

R01 17J 246

T7W E05 259

R01 E08 233

T7W E11 313

T7W E27 313

—

—

T7W E38 310

T7W E49 310

T7W E03 254

—

—

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

YHA

Part No. SpecificationNo.Wiring

DiagramSymbol

Recom-mended

Q,ty

Price

Unit AmountPart Name

Q,ty/setRemarks

(Drawing No.)

(BH00C028G10)

(RG11N336G05)

(RG02N450G10)

(RG02N349G06)

(RG00N768G02)

DCL

F 3,4

FUSE1,2

5P(L1,L2,L3,N,;)

3P(S1,S2,S3)

N.F.

C.B.

P.B.

F.C.F.C.

F.C.

RS

TB1

CB1, 2

TB2

250V 15A

250V 6.3A

2.7mH 25A

YHA1

16"

N.F.

P.B.

C.B.

ELECTRICAL PARTSPUHZ-RP200YHA PUHZ-RP200YHA1


1

2

3

4

5 6 7 8 9 11

12

131416

10

15

Part number that is circled is not shown in the figures.

17 PARTS LIST(non-RoHS compliant)

OC338B-4.qxp 06.7.11 10:56 AM

98

STRUCTURAL PARTSPUHZ-RP200YHAPUHZ-RP250YHAPUHZ-RP200YHA1

PUHZ-RP250YHA1 1

126

13

14

15

16

12

18

19

17

22

25

26

2423

20

21

4

3

2

10

9

8

7

5

11

12

OC338B-4.qxp 06.7.11 10:56 AM

99

PUHZ-RP200/250

1

1

1

1

1

1

1

1

1

1

2

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

2

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

FAN GUARD

SIDE PANEL (L)

FRONT PANEL

SERVICE PANEL

COVER PANEL

COVER PANEL

SEPARATOR

THERMISTOR (OUTDOOR PIPE)

HEAT SINK DUCT

BASE

VALVE BED SUPPORT

LEG

SUPPORT

VALVE BED

SEPARATOR SUPPORT

DRAIN DUCT


THERMISTOR (OUTDOOR)

HEAT EXCHANGER JOINT

SIDE PANEL (R)

REAR PANEL

REAR GUARD

HEAT EXCHANGER (1)

COIL PLATE (1)

COIL PLATE (2)

HEAT EXCHANGER (2)

TOP FRAME

LABEL (MITSUBISHI)

LABEL (INVERTER)

ELECTRICAL PARTS BOX STAND

SENSOR HOLDER

SEPARATOR CAP

R01 E01 675

R01 E05 662

R01 E06 668

R01 E05 667

R01 E06 658

R01 E07 658

—

R01 H75 202

—

—

—

R01 E00 808

—

—

—

—

R01 E74 202

R01 H76 202

—

R01 E10 661

R01 E07 667

R01 E03 698

R01 E66 408

—

—

R01 E39 409

—

—

—

—

—

—

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

YHA


DiagramSymbol

Recom-mended

Q,ty

Price


Q,ty/setRemarks

(Drawing No.)

TH32

TH6,TH7

(BH02C038H01)

(RG02N341H04)

(RG02T894H03)

(RG02N340G05)

TH3

(RG00N510G03)

(RG00T950G07)

(BG02Q044G08)

(RG00T951G05)

(RG02N346G10)

(RG02N397H05)

(RG02N397K05)

(RG00N473G09)

(RG02T748H04)

(BG25V080H03)

(BK79C208G02)

(RG02T749H04)

(DG79R130H01)

YHA1

Part numbers that are circled are not shown in the figures.

OC338B-4.qxp 06.7.11 10:56 AM

100

FUNCTIONAL PARTSPUHZ-RP200YHAPUHZ-RP250YHAPUHZ-RP200YHA1

PUHZ-RP250YHA1

1

17

16

15

1413121110987

6

54

3

2

19 1820

OC338B-4.qxp 06.7.11 10:56 AM

101

PUHZ-RP

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

COMPRESSOR

LINEAR EXPANSION VALVE COIL

LINEAR EXPANSION VALVE

CHARGE PLUG

CHARGE PLUG

STOP VALVE

STOP VALVE

STOP VALVE

STRAINER

STRAINER

STOP VALVE

GASKET

FLANGE ASSY

FLANGE ASSY

STRAINER

STRAINER

SOLENOID COIL (FOUR-WAY VALVE)


SOLENOID VALVE (FOUR-WAY VALVE)


OIL SEPARATOR

SOLENOID COIL (BYPASS VALVE)


SOLENOID VALVE (BYPASS VALVE)


HIGH PRESSURE SWITCH

LOW PRESSURE SWITCH

ACCUMULATOR

THERMISTOR (DISCHARGE)

SOUND INSULATION

CAPILLARY TUBE

CAPILLARY TUBE

T97 410 741

R01 E20 242

R01 E59 401

R01 E06 413

R01 E05 413

R01 E09 410

R01 E08 410

R01 E11 410

R01 E00 450

R01 30L 450

R01 E07 410

R01 E00 570

R01 E00 417

T7W E01 417

R01 E01 450

R01 E02 450

T7W E07 242

T7W E26 242

R01 E11 403

R01 E12 403

R01 E04 490

T7W E06 242

T7W E27 242

R01 E03 428

R01 E11 428

T7W E03 208

R01 25T 209

T7W E13 440

R01 E00 201

—

R01 E19 425

R01 E20 425

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

YHA


DiagramSymbol

Recom-mended

Q,ty

Price


Remarks(Drawing No.)

MC

LEV

21S4

63H

SV

63L

TH4

3/8F

1/2F

1F

ANV47FFBMT

3.0o1.0o1000

3.0o1.0o300

(RG33N368G07)

Q,ty/set

200 250 200 250YHA1

1/2F

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

21S4

SV


OC338B-4.qxp 06.7.11 10:56 AM

102

FAN PARTSPUHZ-RP200YHAPUHZ-RP250YHAPUHZ-RP200YHA1

PUHZ-RP250YHA1

PUHZ-RP200/250

1

1

2

2

1

1

1

1

2

2

1

1

MOTOR CAP

NUT M16

SUPPORT

MOTOR SUPPORT

FAN MOTOR

PROPELLER

R01 E01 122

R01 E05 097

—

R01 E20 130

T7W E26 763

R01 E03 115

1

2

3

4

5

6

YHA


DiagramSymbol

Recom-mended

Q,ty

Price



(BG02U187H03)

MF

Q,ty/set

YHA1

Nuto1,washero2in a set

1

2

3

4

5

6

OC338B-4.qxp 06.7.11 10:56 AM

103

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

PUHZ-RP200/250YHA1

1

1

2

2

2

1

1

1

1

1

1

1

1

1

2

1

1


CIRCUIT BOARD SUPPORT PLATE

FUSE

FUSE

FUSE HOLDER


TERMINAL BLOCK (POWER SUPPLY)

TERMINAL BLOCK (INDOOR / OUTDOOR)

REACTOR

RUSH CURRENT PROTECT RESISTOR

POWER CIRCUIT BOARD

ELECTRICAL PARTS BOX RIGHT SIDE PLATE

HEAT SINK


MAIN SMOOTHING CAPACITOR

ELECTRICAL PARTS BOX

WATERPROOF SHEET FOR THE ELECTRICAL PARTS

T7W E45 315

—

R01 E06 239

R01 E07 239

R01 30L 241

T7W E15 346

T7W E30 716

R01 E19 246

T7W E13 259

R01 E10 233

T7W E33 313

—

—

T7W E49 310

T7W E07 254

—

—

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17


DiagramSymbol

Recom-mended

Q,ty

Price



(BH00C028G10)

(RG11N336G05)

(RG02N450G10)

(RG02N349G06)

(RG00N768G02)

DCL

F 3,4

FUSE1,2

5P(L1,L2,L3,N,;)

3P(S1,S2,S3)

F.C.

RS

TB1

CB1, 2

TB2

250V 15A

250V 6.3A

2.7mH 25A

16"

N.F.

P.B.

C.B.

Q,ty/set

Ro

HS

ELECTRICAL PARTSPUHZ-RP200YHA1

PUHZ-RP250YHA1

1

2

3

4

5 6 7 8 9 11

12

131416

10

15

Part number that is circled is not shown in the figures.

18 RoHS PARTS LIST

OC338B-4.qxp 06.7.11 10:56 AM

104

STRUCTURAL PARTSPUHZ-RP200YHA1

PUHZ-RP250YHA1

1

126

13

14

15

16

12

18

19

17

22

25

26

2423

20

21

4

3

2

10

9

8

7

5

11

12

OC338B-4.qxp 06.7.11 10:56 AM

105

Ro

HS

PUHZ-RP200/250YHA1

1

1

1

1

1

1

1

1

1

1

2

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

FAN GUARD

SIDE PANEL (L)

FRONT PANEL

SERVICE PANEL

COVER PANEL

SEPARATOR


HEAT SINK DUCT

BASE

VALVE BED SUPPORT

LEG

SUPPORT

VALVE BED

SEPARATOR SUPPORT

DRAIN DUCT


THERMISTOR (OUTDOOR)

HEAT EXCHANGER JOINT

SIDE PANEL (R)

REAR PANEL

REAR GUARD

HEAT EXCHANGER (1)

COIL PLATE (1)

COIL PLATE (2)

HEAT EXCHANGER (2)

TOP FRAME

LABEL (MITSUBISHI)

LABEL (INVERTER)

ELECTRICAL PARTS BOX STAND

SENSOR HOLDER

SEPARATOR CAP

R01 E02 675

R01 E17 662

R01 E10 668

R01 E15 667

R01 E15 658

—

R01 H04 202

—

—

—

R01 E02 808

—

—

—

—

R01 H03 202

R01 H02 202

—

R01 E33 661

R01 E16 667

R01 E08 698

R01 E92 408

—

—

R01 E41 409

—

—

—

—

—

—

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31


DiagramSymbol

Recom-mended

Q,ty

Price



TH32

TH6,TH7

(BH02C038H01)

(RG02N341H04)

(RG02T894H03)

(RG02N340G05)

TH3

(RG00N510G03)

(RG00T950G07)

(BG02Q044G08)

(RG00T951G05)

(RG02N346G10)

(RG02N397H05)

(RG02N397K05)

(RG00N473G09)

(RG02T748H04)

(BG25V080H03)

(BK79C208G02)

(RG02T749H04)

(DG79R130H01)

Q,ty/set

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G


OC338B-4.qxp 06.7.11 10:56 AM

106

FUNCTIONAL PARTSPUHZ-RP200YHA1

PUHZ-RP250YHA1

1

17

16

15

1413121110987

6

54

3

2

19 1820

OC338B-4.qxp 06.7.11 10:56 AM

107

Ro

HS

PUHZ-RP·YHA1

COMPRESSOR

LINEAR EXPANSION VALVE COIL

LINEAR EXPANSION VALVE

CHARGE PLUG

CHARGE PLUG

STOP VALVE

STOP VALVE

STRAINER

STRAINER

STOP VALVE

GASKET

FLANGE ASSY

FLANGE ASSY

STRAINER

STRAINER



OIL SEPARATOR



HIGH PRESSURE SWITCH

LOW PRESSURE SWITCH

ACCUMULATOR

THERMISTOR (DISCHARGE)

SOUND INSULATION

CAPILLARY TUBE

CAPILLARY TUBE

T97 415 741

R01 E35 242

R01 E80 401

R01 E25 413

R01 E14 413

R01 E13 410

R01 E23 410

R01 E08 450

R01 31L 450

R01 E14 410

R01 E01 570

R01 E01 417

T7W E02 417

R01 E09 450

R01 E07 450

T7W E26 242

R01 E12 403

R01 E13 490

T7W E27 242

R01 E13 428

T7W E06 208

R01 E00 209

T7W E14 440

R01 E12 201

—

R01 E28 425

R01 E29 425

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

Part No.No.Wiring

DiagramSymbol

Recom-mended

Q,ty

Price



MC

LEV

63H

63L

TH4

3/8F

1F

ANV47FFBMT

3.0o1.0o1000

3.0o1.0o300

(RG33N368G07)

Q,ty/set

200 250

1/2F

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

21S4

SV

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

Specification


OC338B-4.qxp 06.7.11 10:56 AM

FAN PARTSPUHZ-RP200YHA1

PUHZ-RP250YHA1

Ro

HS

PUHZ-RP200/250YHA1

1

1

2

2

1

1

MOTOR CAP

NUT M16

SUPPORT

MOTOR SUPPORT

FAN MOTOR

PROPELLER

R01 E02 122

R01 E10 097

—

R01 E31 130

T7W E29 763

R01 E09 115

1

2

3

4

5

6


DiagramSymbol

Recom-mended

Q,ty

Price



(BG02U187H03)

MF

Q,ty/set

G

G

G

G

G

G

Nuto1,washero2in a set

1

2

3

4

5

6

HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

CCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.Distributed in Jul. 2006 No.OC338 REVISED EDITION-B PDF 8Distributed in Feb. 2006 No.OC338 REVISED EDITION-A PDF 9Distributed in Jun. 2005 No.OC338 PDF 9Made in Japan.

New publication, effective Jul. 2006.Specifications subject to change without notice.

OC338B-4.qxp 06.7.11 10:56 AM

service manualmitsubishitech.co.uk/data/mr-slim_outdoor/puhz-(z)rp/...rant piping is clean and it...

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